2 * soc-dapm.c -- ALSA SoC Dynamic Audio Power Management
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
13 * o Changes power status of internal codec blocks depending on the
14 * dynamic configuration of codec internal audio paths and active
16 * o Platform power domain - can support external components i.e. amps and
17 * mic/headphone insertion events.
18 * o Automatic Mic Bias support
19 * o Jack insertion power event initiation - e.g. hp insertion will enable
21 * o Delayed power down of audio subsystem to reduce pops between a quick
26 #include <linux/module.h>
27 #include <linux/moduleparam.h>
28 #include <linux/init.h>
29 #include <linux/async.h>
30 #include <linux/delay.h>
32 #include <linux/bitops.h>
33 #include <linux/platform_device.h>
34 #include <linux/jiffies.h>
35 #include <linux/debugfs.h>
36 #include <linux/pm_runtime.h>
37 #include <linux/regulator/consumer.h>
38 #include <linux/clk.h>
39 #include <linux/slab.h>
40 #include <sound/core.h>
41 #include <sound/pcm.h>
42 #include <sound/pcm_params.h>
43 #include <sound/soc.h>
44 #include <sound/initval.h>
46 #include <trace/events/asoc.h>
48 #define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++;
50 /* dapm power sequences - make this per codec in the future */
51 static int dapm_up_seq
[] = {
52 [snd_soc_dapm_pre
] = 0,
53 [snd_soc_dapm_supply
] = 1,
54 [snd_soc_dapm_regulator_supply
] = 1,
55 [snd_soc_dapm_clock_supply
] = 1,
56 [snd_soc_dapm_micbias
] = 2,
57 [snd_soc_dapm_dai_link
] = 2,
58 [snd_soc_dapm_dai
] = 3,
59 [snd_soc_dapm_aif_in
] = 3,
60 [snd_soc_dapm_aif_out
] = 3,
61 [snd_soc_dapm_mic
] = 4,
62 [snd_soc_dapm_mux
] = 5,
63 [snd_soc_dapm_virt_mux
] = 5,
64 [snd_soc_dapm_value_mux
] = 5,
65 [snd_soc_dapm_dac
] = 6,
66 [snd_soc_dapm_mixer
] = 7,
67 [snd_soc_dapm_mixer_named_ctl
] = 7,
68 [snd_soc_dapm_pga
] = 8,
69 [snd_soc_dapm_adc
] = 9,
70 [snd_soc_dapm_out_drv
] = 10,
71 [snd_soc_dapm_hp
] = 10,
72 [snd_soc_dapm_spk
] = 10,
73 [snd_soc_dapm_line
] = 10,
74 [snd_soc_dapm_post
] = 11,
77 static int dapm_down_seq
[] = {
78 [snd_soc_dapm_pre
] = 0,
79 [snd_soc_dapm_adc
] = 1,
80 [snd_soc_dapm_hp
] = 2,
81 [snd_soc_dapm_spk
] = 2,
82 [snd_soc_dapm_line
] = 2,
83 [snd_soc_dapm_out_drv
] = 2,
84 [snd_soc_dapm_pga
] = 4,
85 [snd_soc_dapm_mixer_named_ctl
] = 5,
86 [snd_soc_dapm_mixer
] = 5,
87 [snd_soc_dapm_dac
] = 6,
88 [snd_soc_dapm_mic
] = 7,
89 [snd_soc_dapm_micbias
] = 8,
90 [snd_soc_dapm_mux
] = 9,
91 [snd_soc_dapm_virt_mux
] = 9,
92 [snd_soc_dapm_value_mux
] = 9,
93 [snd_soc_dapm_aif_in
] = 10,
94 [snd_soc_dapm_aif_out
] = 10,
95 [snd_soc_dapm_dai
] = 10,
96 [snd_soc_dapm_dai_link
] = 11,
97 [snd_soc_dapm_clock_supply
] = 12,
98 [snd_soc_dapm_regulator_supply
] = 12,
99 [snd_soc_dapm_supply
] = 12,
100 [snd_soc_dapm_post
] = 13,
103 static void pop_wait(u32 pop_time
)
106 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time
));
109 static void pop_dbg(struct device
*dev
, u32 pop_time
, const char *fmt
, ...)
117 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
122 vsnprintf(buf
, PAGE_SIZE
, fmt
, args
);
123 dev_info(dev
, "%s", buf
);
129 static bool dapm_dirty_widget(struct snd_soc_dapm_widget
*w
)
131 return !list_empty(&w
->dirty
);
134 void dapm_mark_dirty(struct snd_soc_dapm_widget
*w
, const char *reason
)
136 if (!dapm_dirty_widget(w
)) {
137 dev_vdbg(w
->dapm
->dev
, "Marking %s dirty due to %s\n",
139 list_add_tail(&w
->dirty
, &w
->dapm
->card
->dapm_dirty
);
142 EXPORT_SYMBOL_GPL(dapm_mark_dirty
);
144 /* create a new dapm widget */
145 static inline struct snd_soc_dapm_widget
*dapm_cnew_widget(
146 const struct snd_soc_dapm_widget
*_widget
)
148 return kmemdup(_widget
, sizeof(*_widget
), GFP_KERNEL
);
151 /* get snd_card from DAPM context */
152 static inline struct snd_card
*dapm_get_snd_card(
153 struct snd_soc_dapm_context
*dapm
)
156 return dapm
->codec
->card
->snd_card
;
157 else if (dapm
->platform
)
158 return dapm
->platform
->card
->snd_card
;
166 /* get soc_card from DAPM context */
167 static inline struct snd_soc_card
*dapm_get_soc_card(
168 struct snd_soc_dapm_context
*dapm
)
171 return dapm
->codec
->card
;
172 else if (dapm
->platform
)
173 return dapm
->platform
->card
;
181 static void dapm_reset(struct snd_soc_card
*card
)
183 struct snd_soc_dapm_widget
*w
;
185 memset(&card
->dapm_stats
, 0, sizeof(card
->dapm_stats
));
187 list_for_each_entry(w
, &card
->widgets
, list
) {
188 w
->power_checked
= false;
194 static int soc_widget_read(struct snd_soc_dapm_widget
*w
, int reg
)
197 return snd_soc_read(w
->codec
, reg
);
198 else if (w
->platform
)
199 return snd_soc_platform_read(w
->platform
, reg
);
201 dev_err(w
->dapm
->dev
, "no valid widget read method\n");
205 static int soc_widget_write(struct snd_soc_dapm_widget
*w
, int reg
, int val
)
208 return snd_soc_write(w
->codec
, reg
, val
);
209 else if (w
->platform
)
210 return snd_soc_platform_write(w
->platform
, reg
, val
);
212 dev_err(w
->dapm
->dev
, "no valid widget write method\n");
216 static inline void soc_widget_lock(struct snd_soc_dapm_widget
*w
)
218 if (w
->codec
&& !w
->codec
->using_regmap
)
219 mutex_lock(&w
->codec
->mutex
);
220 else if (w
->platform
)
221 mutex_lock(&w
->platform
->mutex
);
224 static inline void soc_widget_unlock(struct snd_soc_dapm_widget
*w
)
226 if (w
->codec
&& !w
->codec
->using_regmap
)
227 mutex_unlock(&w
->codec
->mutex
);
228 else if (w
->platform
)
229 mutex_unlock(&w
->platform
->mutex
);
232 static int soc_widget_update_bits_locked(struct snd_soc_dapm_widget
*w
,
233 unsigned short reg
, unsigned int mask
, unsigned int value
)
236 unsigned int old
, new;
239 if (w
->codec
&& w
->codec
->using_regmap
) {
240 ret
= regmap_update_bits_check(w
->codec
->control_data
,
241 reg
, mask
, value
, &change
);
246 ret
= soc_widget_read(w
, reg
);
248 soc_widget_unlock(w
);
253 new = (old
& ~mask
) | (value
& mask
);
256 ret
= soc_widget_write(w
, reg
, new);
258 soc_widget_unlock(w
);
262 soc_widget_unlock(w
);
269 * snd_soc_dapm_set_bias_level - set the bias level for the system
270 * @dapm: DAPM context
271 * @level: level to configure
273 * Configure the bias (power) levels for the SoC audio device.
275 * Returns 0 for success else error.
277 static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context
*dapm
,
278 enum snd_soc_bias_level level
)
280 struct snd_soc_card
*card
= dapm
->card
;
283 trace_snd_soc_bias_level_start(card
, level
);
285 if (card
&& card
->set_bias_level
)
286 ret
= card
->set_bias_level(card
, dapm
, level
);
291 if (dapm
->codec
->driver
->set_bias_level
)
292 ret
= dapm
->codec
->driver
->set_bias_level(dapm
->codec
,
295 dapm
->bias_level
= level
;
300 if (card
&& card
->set_bias_level_post
)
301 ret
= card
->set_bias_level_post(card
, dapm
, level
);
303 trace_snd_soc_bias_level_done(card
, level
);
308 /* set up initial codec paths */
309 static void dapm_set_path_status(struct snd_soc_dapm_widget
*w
,
310 struct snd_soc_dapm_path
*p
, int i
)
313 case snd_soc_dapm_switch
:
314 case snd_soc_dapm_mixer
:
315 case snd_soc_dapm_mixer_named_ctl
: {
317 struct soc_mixer_control
*mc
= (struct soc_mixer_control
*)
318 w
->kcontrol_news
[i
].private_value
;
319 unsigned int reg
= mc
->reg
;
320 unsigned int shift
= mc
->shift
;
322 unsigned int mask
= (1 << fls(max
)) - 1;
323 unsigned int invert
= mc
->invert
;
325 val
= soc_widget_read(w
, reg
);
326 val
= (val
>> shift
) & mask
;
333 case snd_soc_dapm_mux
: {
334 struct soc_enum
*e
= (struct soc_enum
*)
335 w
->kcontrol_news
[i
].private_value
;
336 int val
, item
, bitmask
;
338 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
340 val
= soc_widget_read(w
, e
->reg
);
341 item
= (val
>> e
->shift_l
) & (bitmask
- 1);
344 for (i
= 0; i
< e
->max
; i
++) {
345 if (!(strcmp(p
->name
, e
->texts
[i
])) && item
== i
)
350 case snd_soc_dapm_virt_mux
: {
351 struct soc_enum
*e
= (struct soc_enum
*)
352 w
->kcontrol_news
[i
].private_value
;
355 /* since a virtual mux has no backing registers to
356 * decide which path to connect, it will try to match
357 * with the first enumeration. This is to ensure
358 * that the default mux choice (the first) will be
359 * correctly powered up during initialization.
361 if (!strcmp(p
->name
, e
->texts
[0]))
365 case snd_soc_dapm_value_mux
: {
366 struct soc_enum
*e
= (struct soc_enum
*)
367 w
->kcontrol_news
[i
].private_value
;
370 val
= soc_widget_read(w
, e
->reg
);
371 val
= (val
>> e
->shift_l
) & e
->mask
;
372 for (item
= 0; item
< e
->max
; item
++) {
373 if (val
== e
->values
[item
])
378 for (i
= 0; i
< e
->max
; i
++) {
379 if (!(strcmp(p
->name
, e
->texts
[i
])) && item
== i
)
384 /* does not affect routing - always connected */
385 case snd_soc_dapm_pga
:
386 case snd_soc_dapm_out_drv
:
387 case snd_soc_dapm_output
:
388 case snd_soc_dapm_adc
:
389 case snd_soc_dapm_input
:
390 case snd_soc_dapm_siggen
:
391 case snd_soc_dapm_dac
:
392 case snd_soc_dapm_micbias
:
393 case snd_soc_dapm_vmid
:
394 case snd_soc_dapm_supply
:
395 case snd_soc_dapm_regulator_supply
:
396 case snd_soc_dapm_clock_supply
:
397 case snd_soc_dapm_aif_in
:
398 case snd_soc_dapm_aif_out
:
399 case snd_soc_dapm_dai
:
400 case snd_soc_dapm_hp
:
401 case snd_soc_dapm_mic
:
402 case snd_soc_dapm_spk
:
403 case snd_soc_dapm_line
:
404 case snd_soc_dapm_dai_link
:
407 /* does affect routing - dynamically connected */
408 case snd_soc_dapm_pre
:
409 case snd_soc_dapm_post
:
415 /* connect mux widget to its interconnecting audio paths */
416 static int dapm_connect_mux(struct snd_soc_dapm_context
*dapm
,
417 struct snd_soc_dapm_widget
*src
, struct snd_soc_dapm_widget
*dest
,
418 struct snd_soc_dapm_path
*path
, const char *control_name
,
419 const struct snd_kcontrol_new
*kcontrol
)
421 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
424 for (i
= 0; i
< e
->max
; i
++) {
425 if (!(strcmp(control_name
, e
->texts
[i
]))) {
426 list_add(&path
->list
, &dapm
->card
->paths
);
427 list_add(&path
->list_sink
, &dest
->sources
);
428 list_add(&path
->list_source
, &src
->sinks
);
429 path
->name
= (char*)e
->texts
[i
];
430 dapm_set_path_status(dest
, path
, 0);
438 /* connect mixer widget to its interconnecting audio paths */
439 static int dapm_connect_mixer(struct snd_soc_dapm_context
*dapm
,
440 struct snd_soc_dapm_widget
*src
, struct snd_soc_dapm_widget
*dest
,
441 struct snd_soc_dapm_path
*path
, const char *control_name
)
445 /* search for mixer kcontrol */
446 for (i
= 0; i
< dest
->num_kcontrols
; i
++) {
447 if (!strcmp(control_name
, dest
->kcontrol_news
[i
].name
)) {
448 list_add(&path
->list
, &dapm
->card
->paths
);
449 list_add(&path
->list_sink
, &dest
->sources
);
450 list_add(&path
->list_source
, &src
->sinks
);
451 path
->name
= dest
->kcontrol_news
[i
].name
;
452 dapm_set_path_status(dest
, path
, i
);
459 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context
*dapm
,
460 struct snd_soc_dapm_widget
*kcontrolw
,
461 const struct snd_kcontrol_new
*kcontrol_new
,
462 struct snd_kcontrol
**kcontrol
)
464 struct snd_soc_dapm_widget
*w
;
469 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
470 if (w
== kcontrolw
|| w
->dapm
!= kcontrolw
->dapm
)
472 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
473 if (&w
->kcontrol_news
[i
] == kcontrol_new
) {
475 *kcontrol
= w
->kcontrols
[i
];
484 /* create new dapm mixer control */
485 static int dapm_new_mixer(struct snd_soc_dapm_widget
*w
)
487 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
489 size_t name_len
, prefix_len
;
490 struct snd_soc_dapm_path
*path
;
491 struct snd_card
*card
= dapm
->card
->snd_card
;
493 struct snd_soc_dapm_widget_list
*wlist
;
497 prefix
= dapm
->codec
->name_prefix
;
502 prefix_len
= strlen(prefix
) + 1;
507 for (i
= 0; i
< w
->num_kcontrols
; i
++) {
510 list_for_each_entry(path
, &w
->sources
, list_sink
) {
512 /* mixer/mux paths name must match control name */
513 if (path
->name
!= (char *)w
->kcontrol_news
[i
].name
)
516 if (w
->kcontrols
[i
]) {
517 path
->kcontrol
= w
->kcontrols
[i
];
521 wlistsize
= sizeof(struct snd_soc_dapm_widget_list
) +
522 sizeof(struct snd_soc_dapm_widget
*),
523 wlist
= kzalloc(wlistsize
, GFP_KERNEL
);
526 "asoc: can't allocate widget list for %s\n",
530 wlist
->num_widgets
= 1;
531 wlist
->widgets
[0] = w
;
533 /* add dapm control with long name.
534 * for dapm_mixer this is the concatenation of the
535 * mixer and kcontrol name.
536 * for dapm_mixer_named_ctl this is simply the
539 name_len
= strlen(w
->kcontrol_news
[i
].name
) + 1;
540 if (w
->id
!= snd_soc_dapm_mixer_named_ctl
)
541 name_len
+= 1 + strlen(w
->name
);
543 path
->long_name
= kmalloc(name_len
, GFP_KERNEL
);
545 if (path
->long_name
== NULL
) {
552 /* The control will get a prefix from
553 * the control creation process but
554 * we're also using the same prefix
555 * for widgets so cut the prefix off
556 * the front of the widget name.
558 snprintf((char *)path
->long_name
, name_len
,
559 "%s %s", w
->name
+ prefix_len
,
560 w
->kcontrol_news
[i
].name
);
562 case snd_soc_dapm_mixer_named_ctl
:
563 snprintf((char *)path
->long_name
, name_len
,
564 "%s", w
->kcontrol_news
[i
].name
);
568 ((char *)path
->long_name
)[name_len
- 1] = '\0';
570 path
->kcontrol
= snd_soc_cnew(&w
->kcontrol_news
[i
],
571 wlist
, path
->long_name
,
573 ret
= snd_ctl_add(card
, path
->kcontrol
);
576 "asoc: failed to add dapm kcontrol %s: %d\n",
577 path
->long_name
, ret
);
579 kfree(path
->long_name
);
580 path
->long_name
= NULL
;
583 w
->kcontrols
[i
] = path
->kcontrol
;
589 /* create new dapm mux control */
590 static int dapm_new_mux(struct snd_soc_dapm_widget
*w
)
592 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
593 struct snd_soc_dapm_path
*path
= NULL
;
594 struct snd_kcontrol
*kcontrol
;
595 struct snd_card
*card
= dapm
->card
->snd_card
;
599 struct snd_soc_dapm_widget_list
*wlist
;
600 int shared
, wlistentries
;
604 if (w
->num_kcontrols
!= 1) {
606 "asoc: mux %s has incorrect number of controls\n",
611 shared
= dapm_is_shared_kcontrol(dapm
, w
, &w
->kcontrol_news
[0],
614 wlist
= kcontrol
->private_data
;
615 wlistentries
= wlist
->num_widgets
+ 1;
620 wlistsize
= sizeof(struct snd_soc_dapm_widget_list
) +
621 wlistentries
* sizeof(struct snd_soc_dapm_widget
*),
622 wlist
= krealloc(wlist
, wlistsize
, GFP_KERNEL
);
625 "asoc: can't allocate widget list for %s\n", w
->name
);
628 wlist
->num_widgets
= wlistentries
;
629 wlist
->widgets
[wlistentries
- 1] = w
;
633 prefix
= dapm
->codec
->name_prefix
;
638 name
= w
->kcontrol_news
[0].name
;
643 prefix_len
= strlen(prefix
) + 1;
649 * The control will get a prefix from the control creation
650 * process but we're also using the same prefix for widgets so
651 * cut the prefix off the front of the widget name.
653 kcontrol
= snd_soc_cnew(&w
->kcontrol_news
[0], wlist
,
654 name
+ prefix_len
, prefix
);
655 ret
= snd_ctl_add(card
, kcontrol
);
657 dev_err(dapm
->dev
, "failed to add kcontrol %s: %d\n",
664 kcontrol
->private_data
= wlist
;
666 w
->kcontrols
[0] = kcontrol
;
668 list_for_each_entry(path
, &w
->sources
, list_sink
)
669 path
->kcontrol
= kcontrol
;
674 /* create new dapm volume control */
675 static int dapm_new_pga(struct snd_soc_dapm_widget
*w
)
677 if (w
->num_kcontrols
)
678 dev_err(w
->dapm
->dev
,
679 "asoc: PGA controls not supported: '%s'\n", w
->name
);
684 /* reset 'walked' bit for each dapm path */
685 static inline void dapm_clear_walk(struct snd_soc_dapm_context
*dapm
)
687 struct snd_soc_dapm_path
*p
;
689 list_for_each_entry(p
, &dapm
->card
->paths
, list
)
693 /* We implement power down on suspend by checking the power state of
694 * the ALSA card - when we are suspending the ALSA state for the card
697 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget
*widget
)
699 int level
= snd_power_get_state(widget
->dapm
->card
->snd_card
);
702 case SNDRV_CTL_POWER_D3hot
:
703 case SNDRV_CTL_POWER_D3cold
:
704 if (widget
->ignore_suspend
)
705 dev_dbg(widget
->dapm
->dev
, "%s ignoring suspend\n",
707 return widget
->ignore_suspend
;
713 /* add widget to list if it's not already in the list */
714 static int dapm_list_add_widget(struct snd_soc_dapm_widget_list
**list
,
715 struct snd_soc_dapm_widget
*w
)
717 struct snd_soc_dapm_widget_list
*wlist
;
718 int wlistsize
, wlistentries
, i
;
725 /* is this widget already in the list */
726 for (i
= 0; i
< wlist
->num_widgets
; i
++) {
727 if (wlist
->widgets
[i
] == w
)
731 /* allocate some new space */
732 wlistentries
= wlist
->num_widgets
+ 1;
733 wlistsize
= sizeof(struct snd_soc_dapm_widget_list
) +
734 wlistentries
* sizeof(struct snd_soc_dapm_widget
*);
735 *list
= krealloc(wlist
, wlistsize
, GFP_KERNEL
);
737 dev_err(w
->dapm
->dev
, "can't allocate widget list for %s\n",
743 /* insert the widget */
744 dev_dbg(w
->dapm
->dev
, "added %s in widget list pos %d\n",
745 w
->name
, wlist
->num_widgets
);
747 wlist
->widgets
[wlist
->num_widgets
] = w
;
748 wlist
->num_widgets
++;
753 * Recursively check for a completed path to an active or physically connected
754 * output widget. Returns number of complete paths.
756 static int is_connected_output_ep(struct snd_soc_dapm_widget
*widget
,
757 struct snd_soc_dapm_widget_list
**list
)
759 struct snd_soc_dapm_path
*path
;
762 if (widget
->outputs
>= 0)
763 return widget
->outputs
;
765 DAPM_UPDATE_STAT(widget
, path_checks
);
767 switch (widget
->id
) {
768 case snd_soc_dapm_supply
:
769 case snd_soc_dapm_regulator_supply
:
770 case snd_soc_dapm_clock_supply
:
776 switch (widget
->id
) {
777 case snd_soc_dapm_adc
:
778 case snd_soc_dapm_aif_out
:
779 case snd_soc_dapm_dai
:
780 if (widget
->active
) {
781 widget
->outputs
= snd_soc_dapm_suspend_check(widget
);
782 return widget
->outputs
;
788 if (widget
->connected
) {
789 /* connected pin ? */
790 if (widget
->id
== snd_soc_dapm_output
&& !widget
->ext
) {
791 widget
->outputs
= snd_soc_dapm_suspend_check(widget
);
792 return widget
->outputs
;
795 /* connected jack or spk ? */
796 if (widget
->id
== snd_soc_dapm_hp
||
797 widget
->id
== snd_soc_dapm_spk
||
798 (widget
->id
== snd_soc_dapm_line
&&
799 !list_empty(&widget
->sources
))) {
800 widget
->outputs
= snd_soc_dapm_suspend_check(widget
);
801 return widget
->outputs
;
805 list_for_each_entry(path
, &widget
->sinks
, list_source
) {
806 DAPM_UPDATE_STAT(widget
, neighbour_checks
);
814 trace_snd_soc_dapm_output_path(widget
, path
);
816 if (path
->sink
&& path
->connect
) {
819 /* do we need to add this widget to the list ? */
822 err
= dapm_list_add_widget(list
, path
->sink
);
824 dev_err(widget
->dapm
->dev
, "could not add widget %s\n",
830 con
+= is_connected_output_ep(path
->sink
, list
);
834 widget
->outputs
= con
;
840 * Recursively check for a completed path to an active or physically connected
841 * input widget. Returns number of complete paths.
843 static int is_connected_input_ep(struct snd_soc_dapm_widget
*widget
,
844 struct snd_soc_dapm_widget_list
**list
)
846 struct snd_soc_dapm_path
*path
;
849 if (widget
->inputs
>= 0)
850 return widget
->inputs
;
852 DAPM_UPDATE_STAT(widget
, path_checks
);
854 switch (widget
->id
) {
855 case snd_soc_dapm_supply
:
856 case snd_soc_dapm_regulator_supply
:
857 case snd_soc_dapm_clock_supply
:
863 /* active stream ? */
864 switch (widget
->id
) {
865 case snd_soc_dapm_dac
:
866 case snd_soc_dapm_aif_in
:
867 case snd_soc_dapm_dai
:
868 if (widget
->active
) {
869 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
870 return widget
->inputs
;
876 if (widget
->connected
) {
877 /* connected pin ? */
878 if (widget
->id
== snd_soc_dapm_input
&& !widget
->ext
) {
879 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
880 return widget
->inputs
;
883 /* connected VMID/Bias for lower pops */
884 if (widget
->id
== snd_soc_dapm_vmid
) {
885 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
886 return widget
->inputs
;
889 /* connected jack ? */
890 if (widget
->id
== snd_soc_dapm_mic
||
891 (widget
->id
== snd_soc_dapm_line
&&
892 !list_empty(&widget
->sinks
))) {
893 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
894 return widget
->inputs
;
897 /* signal generator */
898 if (widget
->id
== snd_soc_dapm_siggen
) {
899 widget
->inputs
= snd_soc_dapm_suspend_check(widget
);
900 return widget
->inputs
;
904 list_for_each_entry(path
, &widget
->sources
, list_sink
) {
905 DAPM_UPDATE_STAT(widget
, neighbour_checks
);
913 trace_snd_soc_dapm_input_path(widget
, path
);
915 if (path
->source
&& path
->connect
) {
918 /* do we need to add this widget to the list ? */
921 err
= dapm_list_add_widget(list
, path
->source
);
923 dev_err(widget
->dapm
->dev
, "could not add widget %s\n",
929 con
+= is_connected_input_ep(path
->source
, list
);
933 widget
->inputs
= con
;
939 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
941 * @stream: stream direction.
942 * @list: list of active widgets for this stream.
944 * Queries DAPM graph as to whether an valid audio stream path exists for
945 * the initial stream specified by name. This takes into account
946 * current mixer and mux kcontrol settings. Creates list of valid widgets.
948 * Returns the number of valid paths or negative error.
950 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai
*dai
, int stream
,
951 struct snd_soc_dapm_widget_list
**list
)
953 struct snd_soc_card
*card
= dai
->card
;
956 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
959 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
)
960 paths
= is_connected_output_ep(dai
->playback_widget
, list
);
962 paths
= is_connected_input_ep(dai
->capture_widget
, list
);
964 trace_snd_soc_dapm_connected(paths
, stream
);
965 dapm_clear_walk(&card
->dapm
);
966 mutex_unlock(&card
->dapm_mutex
);
972 * Handler for generic register modifier widget.
974 int dapm_reg_event(struct snd_soc_dapm_widget
*w
,
975 struct snd_kcontrol
*kcontrol
, int event
)
979 if (SND_SOC_DAPM_EVENT_ON(event
))
984 soc_widget_update_bits_locked(w
, -(w
->reg
+ 1),
985 w
->mask
<< w
->shift
, val
<< w
->shift
);
989 EXPORT_SYMBOL_GPL(dapm_reg_event
);
992 * Handler for regulator supply widget.
994 int dapm_regulator_event(struct snd_soc_dapm_widget
*w
,
995 struct snd_kcontrol
*kcontrol
, int event
)
997 if (SND_SOC_DAPM_EVENT_ON(event
))
998 return regulator_enable(w
->regulator
);
1000 return regulator_disable_deferred(w
->regulator
, w
->shift
);
1002 EXPORT_SYMBOL_GPL(dapm_regulator_event
);
1005 * Handler for clock supply widget.
1007 int dapm_clock_event(struct snd_soc_dapm_widget
*w
,
1008 struct snd_kcontrol
*kcontrol
, int event
)
1013 #ifdef CONFIG_HAVE_CLK
1014 if (SND_SOC_DAPM_EVENT_ON(event
)) {
1015 return clk_enable(w
->clk
);
1017 clk_disable(w
->clk
);
1023 EXPORT_SYMBOL_GPL(dapm_clock_event
);
1025 static int dapm_widget_power_check(struct snd_soc_dapm_widget
*w
)
1027 if (w
->power_checked
)
1028 return w
->new_power
;
1033 w
->new_power
= w
->power_check(w
);
1035 w
->power_checked
= true;
1037 return w
->new_power
;
1040 /* Generic check to see if a widget should be powered.
1042 static int dapm_generic_check_power(struct snd_soc_dapm_widget
*w
)
1046 DAPM_UPDATE_STAT(w
, power_checks
);
1048 in
= is_connected_input_ep(w
, NULL
);
1049 dapm_clear_walk(w
->dapm
);
1050 out
= is_connected_output_ep(w
, NULL
);
1051 dapm_clear_walk(w
->dapm
);
1052 return out
!= 0 && in
!= 0;
1055 static int dapm_dai_check_power(struct snd_soc_dapm_widget
*w
)
1057 DAPM_UPDATE_STAT(w
, power_checks
);
1062 return dapm_generic_check_power(w
);
1065 /* Check to see if an ADC has power */
1066 static int dapm_adc_check_power(struct snd_soc_dapm_widget
*w
)
1070 DAPM_UPDATE_STAT(w
, power_checks
);
1073 in
= is_connected_input_ep(w
, NULL
);
1074 dapm_clear_walk(w
->dapm
);
1077 return dapm_generic_check_power(w
);
1081 /* Check to see if a DAC has power */
1082 static int dapm_dac_check_power(struct snd_soc_dapm_widget
*w
)
1086 DAPM_UPDATE_STAT(w
, power_checks
);
1089 out
= is_connected_output_ep(w
, NULL
);
1090 dapm_clear_walk(w
->dapm
);
1093 return dapm_generic_check_power(w
);
1097 /* Check to see if a power supply is needed */
1098 static int dapm_supply_check_power(struct snd_soc_dapm_widget
*w
)
1100 struct snd_soc_dapm_path
*path
;
1102 DAPM_UPDATE_STAT(w
, power_checks
);
1104 /* Check if one of our outputs is connected */
1105 list_for_each_entry(path
, &w
->sinks
, list_source
) {
1106 DAPM_UPDATE_STAT(w
, neighbour_checks
);
1111 if (path
->connected
&&
1112 !path
->connected(path
->source
, path
->sink
))
1118 if (dapm_widget_power_check(path
->sink
))
1122 dapm_clear_walk(w
->dapm
);
1127 static int dapm_always_on_check_power(struct snd_soc_dapm_widget
*w
)
1132 static int dapm_seq_compare(struct snd_soc_dapm_widget
*a
,
1133 struct snd_soc_dapm_widget
*b
,
1141 sort
= dapm_down_seq
;
1143 if (sort
[a
->id
] != sort
[b
->id
])
1144 return sort
[a
->id
] - sort
[b
->id
];
1145 if (a
->subseq
!= b
->subseq
) {
1147 return a
->subseq
- b
->subseq
;
1149 return b
->subseq
- a
->subseq
;
1151 if (a
->reg
!= b
->reg
)
1152 return a
->reg
- b
->reg
;
1153 if (a
->dapm
!= b
->dapm
)
1154 return (unsigned long)a
->dapm
- (unsigned long)b
->dapm
;
1159 /* Insert a widget in order into a DAPM power sequence. */
1160 static void dapm_seq_insert(struct snd_soc_dapm_widget
*new_widget
,
1161 struct list_head
*list
,
1164 struct snd_soc_dapm_widget
*w
;
1166 list_for_each_entry(w
, list
, power_list
)
1167 if (dapm_seq_compare(new_widget
, w
, power_up
) < 0) {
1168 list_add_tail(&new_widget
->power_list
, &w
->power_list
);
1172 list_add_tail(&new_widget
->power_list
, list
);
1175 static void dapm_seq_check_event(struct snd_soc_dapm_context
*dapm
,
1176 struct snd_soc_dapm_widget
*w
, int event
)
1178 struct snd_soc_card
*card
= dapm
->card
;
1179 const char *ev_name
;
1183 case SND_SOC_DAPM_PRE_PMU
:
1184 ev_name
= "PRE_PMU";
1187 case SND_SOC_DAPM_POST_PMU
:
1188 ev_name
= "POST_PMU";
1191 case SND_SOC_DAPM_PRE_PMD
:
1192 ev_name
= "PRE_PMD";
1195 case SND_SOC_DAPM_POST_PMD
:
1196 ev_name
= "POST_PMD";
1204 if (w
->power
!= power
)
1207 if (w
->event
&& (w
->event_flags
& event
)) {
1208 pop_dbg(dapm
->dev
, card
->pop_time
, "pop test : %s %s\n",
1210 trace_snd_soc_dapm_widget_event_start(w
, event
);
1211 ret
= w
->event(w
, NULL
, event
);
1212 trace_snd_soc_dapm_widget_event_done(w
, event
);
1214 pr_err("%s: %s event failed: %d\n",
1215 ev_name
, w
->name
, ret
);
1219 /* Apply the coalesced changes from a DAPM sequence */
1220 static void dapm_seq_run_coalesced(struct snd_soc_dapm_context
*dapm
,
1221 struct list_head
*pending
)
1223 struct snd_soc_card
*card
= dapm
->card
;
1224 struct snd_soc_dapm_widget
*w
;
1226 unsigned int value
= 0;
1227 unsigned int mask
= 0;
1228 unsigned int cur_mask
;
1230 reg
= list_first_entry(pending
, struct snd_soc_dapm_widget
,
1233 list_for_each_entry(w
, pending
, power_list
) {
1234 cur_mask
= 1 << w
->shift
;
1235 BUG_ON(reg
!= w
->reg
);
1246 pop_dbg(dapm
->dev
, card
->pop_time
,
1247 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1248 w
->name
, reg
, value
, mask
);
1250 /* Check for events */
1251 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_PRE_PMU
);
1252 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_PRE_PMD
);
1256 /* Any widget will do, they should all be updating the
1259 w
= list_first_entry(pending
, struct snd_soc_dapm_widget
,
1262 pop_dbg(dapm
->dev
, card
->pop_time
,
1263 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1264 value
, mask
, reg
, card
->pop_time
);
1265 pop_wait(card
->pop_time
);
1266 soc_widget_update_bits_locked(w
, reg
, mask
, value
);
1269 list_for_each_entry(w
, pending
, power_list
) {
1270 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_POST_PMU
);
1271 dapm_seq_check_event(dapm
, w
, SND_SOC_DAPM_POST_PMD
);
1275 /* Apply a DAPM power sequence.
1277 * We walk over a pre-sorted list of widgets to apply power to. In
1278 * order to minimise the number of writes to the device required
1279 * multiple widgets will be updated in a single write where possible.
1280 * Currently anything that requires more than a single write is not
1283 static void dapm_seq_run(struct snd_soc_dapm_context
*dapm
,
1284 struct list_head
*list
, int event
, bool power_up
)
1286 struct snd_soc_dapm_widget
*w
, *n
;
1289 int cur_subseq
= -1;
1290 int cur_reg
= SND_SOC_NOPM
;
1291 struct snd_soc_dapm_context
*cur_dapm
= NULL
;
1298 sort
= dapm_down_seq
;
1300 list_for_each_entry_safe(w
, n
, list
, power_list
) {
1303 /* Do we need to apply any queued changes? */
1304 if (sort
[w
->id
] != cur_sort
|| w
->reg
!= cur_reg
||
1305 w
->dapm
!= cur_dapm
|| w
->subseq
!= cur_subseq
) {
1306 if (!list_empty(&pending
))
1307 dapm_seq_run_coalesced(cur_dapm
, &pending
);
1309 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
1310 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1311 if (sort
[i
] == cur_sort
)
1312 cur_dapm
->seq_notifier(cur_dapm
,
1317 INIT_LIST_HEAD(&pending
);
1319 cur_subseq
= INT_MIN
;
1320 cur_reg
= SND_SOC_NOPM
;
1325 case snd_soc_dapm_pre
:
1327 list_for_each_entry_safe_continue(w
, n
, list
,
1330 if (event
== SND_SOC_DAPM_STREAM_START
)
1332 NULL
, SND_SOC_DAPM_PRE_PMU
);
1333 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1335 NULL
, SND_SOC_DAPM_PRE_PMD
);
1338 case snd_soc_dapm_post
:
1340 list_for_each_entry_safe_continue(w
, n
, list
,
1343 if (event
== SND_SOC_DAPM_STREAM_START
)
1345 NULL
, SND_SOC_DAPM_POST_PMU
);
1346 else if (event
== SND_SOC_DAPM_STREAM_STOP
)
1348 NULL
, SND_SOC_DAPM_POST_PMD
);
1352 /* Queue it up for application */
1353 cur_sort
= sort
[w
->id
];
1354 cur_subseq
= w
->subseq
;
1357 list_move(&w
->power_list
, &pending
);
1362 dev_err(w
->dapm
->dev
,
1363 "Failed to apply widget power: %d\n", ret
);
1366 if (!list_empty(&pending
))
1367 dapm_seq_run_coalesced(cur_dapm
, &pending
);
1369 if (cur_dapm
&& cur_dapm
->seq_notifier
) {
1370 for (i
= 0; i
< ARRAY_SIZE(dapm_up_seq
); i
++)
1371 if (sort
[i
] == cur_sort
)
1372 cur_dapm
->seq_notifier(cur_dapm
,
1377 static void dapm_widget_update(struct snd_soc_dapm_context
*dapm
)
1379 struct snd_soc_dapm_update
*update
= dapm
->update
;
1380 struct snd_soc_dapm_widget
*w
;
1389 (w
->event_flags
& SND_SOC_DAPM_PRE_REG
)) {
1390 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_PRE_REG
);
1392 pr_err("%s DAPM pre-event failed: %d\n",
1396 ret
= soc_widget_update_bits_locked(w
, update
->reg
, update
->mask
,
1399 pr_err("%s DAPM update failed: %d\n", w
->name
, ret
);
1402 (w
->event_flags
& SND_SOC_DAPM_POST_REG
)) {
1403 ret
= w
->event(w
, update
->kcontrol
, SND_SOC_DAPM_POST_REG
);
1405 pr_err("%s DAPM post-event failed: %d\n",
1410 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1411 * they're changing state.
1413 static void dapm_pre_sequence_async(void *data
, async_cookie_t cookie
)
1415 struct snd_soc_dapm_context
*d
= data
;
1418 /* If we're off and we're not supposed to be go into STANDBY */
1419 if (d
->bias_level
== SND_SOC_BIAS_OFF
&&
1420 d
->target_bias_level
!= SND_SOC_BIAS_OFF
) {
1422 pm_runtime_get_sync(d
->dev
);
1424 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1427 "Failed to turn on bias: %d\n", ret
);
1430 /* Prepare for a STADDBY->ON or ON->STANDBY transition */
1431 if (d
->bias_level
!= d
->target_bias_level
) {
1432 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_PREPARE
);
1435 "Failed to prepare bias: %d\n", ret
);
1439 /* Async callback run prior to DAPM sequences - brings to their final
1442 static void dapm_post_sequence_async(void *data
, async_cookie_t cookie
)
1444 struct snd_soc_dapm_context
*d
= data
;
1447 /* If we just powered the last thing off drop to standby bias */
1448 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1449 (d
->target_bias_level
== SND_SOC_BIAS_STANDBY
||
1450 d
->target_bias_level
== SND_SOC_BIAS_OFF
)) {
1451 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_STANDBY
);
1453 dev_err(d
->dev
, "Failed to apply standby bias: %d\n",
1457 /* If we're in standby and can support bias off then do that */
1458 if (d
->bias_level
== SND_SOC_BIAS_STANDBY
&&
1459 d
->target_bias_level
== SND_SOC_BIAS_OFF
) {
1460 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_OFF
);
1462 dev_err(d
->dev
, "Failed to turn off bias: %d\n", ret
);
1465 pm_runtime_put(d
->dev
);
1468 /* If we just powered up then move to active bias */
1469 if (d
->bias_level
== SND_SOC_BIAS_PREPARE
&&
1470 d
->target_bias_level
== SND_SOC_BIAS_ON
) {
1471 ret
= snd_soc_dapm_set_bias_level(d
, SND_SOC_BIAS_ON
);
1473 dev_err(d
->dev
, "Failed to apply active bias: %d\n",
1478 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget
*peer
,
1479 bool power
, bool connect
)
1481 /* If a connection is being made or broken then that update
1482 * will have marked the peer dirty, otherwise the widgets are
1483 * not connected and this update has no impact. */
1487 /* If the peer is already in the state we're moving to then we
1488 * won't have an impact on it. */
1489 if (power
!= peer
->power
)
1490 dapm_mark_dirty(peer
, "peer state change");
1493 static void dapm_widget_set_power(struct snd_soc_dapm_widget
*w
, bool power
,
1494 struct list_head
*up_list
,
1495 struct list_head
*down_list
)
1497 struct snd_soc_dapm_path
*path
;
1499 if (w
->power
== power
)
1502 trace_snd_soc_dapm_widget_power(w
, power
);
1504 /* If we changed our power state perhaps our neigbours changed
1507 list_for_each_entry(path
, &w
->sources
, list_sink
) {
1509 dapm_widget_set_peer_power(path
->source
, power
,
1514 case snd_soc_dapm_supply
:
1515 case snd_soc_dapm_regulator_supply
:
1516 case snd_soc_dapm_clock_supply
:
1517 /* Supplies can't affect their outputs, only their inputs */
1520 list_for_each_entry(path
, &w
->sinks
, list_source
) {
1522 dapm_widget_set_peer_power(path
->sink
, power
,
1530 dapm_seq_insert(w
, up_list
, true);
1532 dapm_seq_insert(w
, down_list
, false);
1537 static void dapm_power_one_widget(struct snd_soc_dapm_widget
*w
,
1538 struct list_head
*up_list
,
1539 struct list_head
*down_list
)
1544 case snd_soc_dapm_pre
:
1545 dapm_seq_insert(w
, down_list
, false);
1547 case snd_soc_dapm_post
:
1548 dapm_seq_insert(w
, up_list
, true);
1552 power
= dapm_widget_power_check(w
);
1554 dapm_widget_set_power(w
, power
, up_list
, down_list
);
1560 * Scan each dapm widget for complete audio path.
1561 * A complete path is a route that has valid endpoints i.e.:-
1563 * o DAC to output pin.
1564 * o Input Pin to ADC.
1565 * o Input pin to Output pin (bypass, sidetone)
1566 * o DAC to ADC (loopback).
1568 static int dapm_power_widgets(struct snd_soc_dapm_context
*dapm
, int event
)
1570 struct snd_soc_card
*card
= dapm
->card
;
1571 struct snd_soc_dapm_widget
*w
;
1572 struct snd_soc_dapm_context
*d
;
1574 LIST_HEAD(down_list
);
1575 ASYNC_DOMAIN_EXCLUSIVE(async_domain
);
1576 enum snd_soc_bias_level bias
;
1578 trace_snd_soc_dapm_start(card
);
1580 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1581 if (d
->idle_bias_off
)
1582 d
->target_bias_level
= SND_SOC_BIAS_OFF
;
1584 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1589 /* Check which widgets we need to power and store them in
1590 * lists indicating if they should be powered up or down. We
1591 * only check widgets that have been flagged as dirty but note
1592 * that new widgets may be added to the dirty list while we
1595 list_for_each_entry(w
, &card
->dapm_dirty
, dirty
) {
1596 dapm_power_one_widget(w
, &up_list
, &down_list
);
1599 list_for_each_entry(w
, &card
->widgets
, list
) {
1601 case snd_soc_dapm_pre
:
1602 case snd_soc_dapm_post
:
1603 /* These widgets always need to be powered */
1606 list_del_init(&w
->dirty
);
1613 /* Supplies and micbiases only bring the
1614 * context up to STANDBY as unless something
1615 * else is active and passing audio they
1616 * generally don't require full power. Signal
1617 * generators are virtual pins and have no
1618 * power impact themselves.
1621 case snd_soc_dapm_siggen
:
1623 case snd_soc_dapm_supply
:
1624 case snd_soc_dapm_regulator_supply
:
1625 case snd_soc_dapm_clock_supply
:
1626 case snd_soc_dapm_micbias
:
1627 if (d
->target_bias_level
< SND_SOC_BIAS_STANDBY
)
1628 d
->target_bias_level
= SND_SOC_BIAS_STANDBY
;
1631 d
->target_bias_level
= SND_SOC_BIAS_ON
;
1638 /* Force all contexts in the card to the same bias state if
1639 * they're not ground referenced.
1641 bias
= SND_SOC_BIAS_OFF
;
1642 list_for_each_entry(d
, &card
->dapm_list
, list
)
1643 if (d
->target_bias_level
> bias
)
1644 bias
= d
->target_bias_level
;
1645 list_for_each_entry(d
, &card
->dapm_list
, list
)
1646 if (!d
->idle_bias_off
)
1647 d
->target_bias_level
= bias
;
1649 trace_snd_soc_dapm_walk_done(card
);
1651 /* Run all the bias changes in parallel */
1652 list_for_each_entry(d
, &dapm
->card
->dapm_list
, list
)
1653 async_schedule_domain(dapm_pre_sequence_async
, d
,
1655 async_synchronize_full_domain(&async_domain
);
1657 /* Power down widgets first; try to avoid amplifying pops. */
1658 dapm_seq_run(dapm
, &down_list
, event
, false);
1660 dapm_widget_update(dapm
);
1663 dapm_seq_run(dapm
, &up_list
, event
, true);
1665 /* Run all the bias changes in parallel */
1666 list_for_each_entry(d
, &dapm
->card
->dapm_list
, list
)
1667 async_schedule_domain(dapm_post_sequence_async
, d
,
1669 async_synchronize_full_domain(&async_domain
);
1671 /* do we need to notify any clients that DAPM event is complete */
1672 list_for_each_entry(d
, &card
->dapm_list
, list
) {
1673 if (d
->stream_event
)
1674 d
->stream_event(d
, event
);
1677 pop_dbg(dapm
->dev
, card
->pop_time
,
1678 "DAPM sequencing finished, waiting %dms\n", card
->pop_time
);
1679 pop_wait(card
->pop_time
);
1681 trace_snd_soc_dapm_done(card
);
1686 #ifdef CONFIG_DEBUG_FS
1687 static ssize_t
dapm_widget_power_read_file(struct file
*file
,
1688 char __user
*user_buf
,
1689 size_t count
, loff_t
*ppos
)
1691 struct snd_soc_dapm_widget
*w
= file
->private_data
;
1695 struct snd_soc_dapm_path
*p
= NULL
;
1697 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
1701 in
= is_connected_input_ep(w
, NULL
);
1702 dapm_clear_walk(w
->dapm
);
1703 out
= is_connected_output_ep(w
, NULL
);
1704 dapm_clear_walk(w
->dapm
);
1706 ret
= snprintf(buf
, PAGE_SIZE
, "%s: %s%s in %d out %d",
1707 w
->name
, w
->power
? "On" : "Off",
1708 w
->force
? " (forced)" : "", in
, out
);
1711 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1712 " - R%d(0x%x) bit %d",
1713 w
->reg
, w
->reg
, w
->shift
);
1715 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, "\n");
1718 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
, " stream %s %s\n",
1720 w
->active
? "active" : "inactive");
1722 list_for_each_entry(p
, &w
->sources
, list_sink
) {
1723 if (p
->connected
&& !p
->connected(w
, p
->sink
))
1727 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1728 " in \"%s\" \"%s\"\n",
1729 p
->name
? p
->name
: "static",
1732 list_for_each_entry(p
, &w
->sinks
, list_source
) {
1733 if (p
->connected
&& !p
->connected(w
, p
->sink
))
1737 ret
+= snprintf(buf
+ ret
, PAGE_SIZE
- ret
,
1738 " out \"%s\" \"%s\"\n",
1739 p
->name
? p
->name
: "static",
1743 ret
= simple_read_from_buffer(user_buf
, count
, ppos
, buf
, ret
);
1749 static const struct file_operations dapm_widget_power_fops
= {
1750 .open
= simple_open
,
1751 .read
= dapm_widget_power_read_file
,
1752 .llseek
= default_llseek
,
1755 static ssize_t
dapm_bias_read_file(struct file
*file
, char __user
*user_buf
,
1756 size_t count
, loff_t
*ppos
)
1758 struct snd_soc_dapm_context
*dapm
= file
->private_data
;
1761 switch (dapm
->bias_level
) {
1762 case SND_SOC_BIAS_ON
:
1765 case SND_SOC_BIAS_PREPARE
:
1766 level
= "Prepare\n";
1768 case SND_SOC_BIAS_STANDBY
:
1769 level
= "Standby\n";
1771 case SND_SOC_BIAS_OFF
:
1776 level
= "Unknown\n";
1780 return simple_read_from_buffer(user_buf
, count
, ppos
, level
,
1784 static const struct file_operations dapm_bias_fops
= {
1785 .open
= simple_open
,
1786 .read
= dapm_bias_read_file
,
1787 .llseek
= default_llseek
,
1790 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
1791 struct dentry
*parent
)
1795 dapm
->debugfs_dapm
= debugfs_create_dir("dapm", parent
);
1797 if (!dapm
->debugfs_dapm
) {
1799 "Failed to create DAPM debugfs directory\n");
1803 d
= debugfs_create_file("bias_level", 0444,
1804 dapm
->debugfs_dapm
, dapm
,
1808 "ASoC: Failed to create bias level debugfs file\n");
1811 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
1813 struct snd_soc_dapm_context
*dapm
= w
->dapm
;
1816 if (!dapm
->debugfs_dapm
|| !w
->name
)
1819 d
= debugfs_create_file(w
->name
, 0444,
1820 dapm
->debugfs_dapm
, w
,
1821 &dapm_widget_power_fops
);
1823 dev_warn(w
->dapm
->dev
,
1824 "ASoC: Failed to create %s debugfs file\n",
1828 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
1830 debugfs_remove_recursive(dapm
->debugfs_dapm
);
1834 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context
*dapm
,
1835 struct dentry
*parent
)
1839 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget
*w
)
1843 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context
*dapm
)
1849 /* test and update the power status of a mux widget */
1850 static int soc_dapm_mux_update_power(struct snd_soc_dapm_widget
*widget
,
1851 struct snd_kcontrol
*kcontrol
, int mux
, struct soc_enum
*e
)
1853 struct snd_soc_dapm_path
*path
;
1856 if (widget
->id
!= snd_soc_dapm_mux
&&
1857 widget
->id
!= snd_soc_dapm_virt_mux
&&
1858 widget
->id
!= snd_soc_dapm_value_mux
)
1861 /* find dapm widget path assoc with kcontrol */
1862 list_for_each_entry(path
, &widget
->dapm
->card
->paths
, list
) {
1863 if (path
->kcontrol
!= kcontrol
)
1866 if (!path
->name
|| !e
->texts
[mux
])
1870 /* we now need to match the string in the enum to the path */
1871 if (!(strcmp(path
->name
, e
->texts
[mux
]))) {
1872 path
->connect
= 1; /* new connection */
1873 dapm_mark_dirty(path
->source
, "mux connection");
1876 dapm_mark_dirty(path
->source
,
1877 "mux disconnection");
1878 path
->connect
= 0; /* old connection must be powered down */
1883 dapm_mark_dirty(widget
, "mux change");
1884 dapm_power_widgets(widget
->dapm
, SND_SOC_DAPM_STREAM_NOP
);
1890 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_widget
*widget
,
1891 struct snd_kcontrol
*kcontrol
, int mux
, struct soc_enum
*e
)
1893 struct snd_soc_card
*card
= widget
->dapm
->card
;
1896 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
1897 ret
= soc_dapm_mux_update_power(widget
, kcontrol
, mux
, e
);
1898 mutex_unlock(&card
->dapm_mutex
);
1900 soc_dpcm_runtime_update(widget
);
1903 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power
);
1905 /* test and update the power status of a mixer or switch widget */
1906 static int soc_dapm_mixer_update_power(struct snd_soc_dapm_widget
*widget
,
1907 struct snd_kcontrol
*kcontrol
, int connect
)
1909 struct snd_soc_dapm_path
*path
;
1912 if (widget
->id
!= snd_soc_dapm_mixer
&&
1913 widget
->id
!= snd_soc_dapm_mixer_named_ctl
&&
1914 widget
->id
!= snd_soc_dapm_switch
)
1917 /* find dapm widget path assoc with kcontrol */
1918 list_for_each_entry(path
, &widget
->dapm
->card
->paths
, list
) {
1919 if (path
->kcontrol
!= kcontrol
)
1922 /* found, now check type */
1924 path
->connect
= connect
;
1925 dapm_mark_dirty(path
->source
, "mixer connection");
1929 dapm_mark_dirty(widget
, "mixer update");
1930 dapm_power_widgets(widget
->dapm
, SND_SOC_DAPM_STREAM_NOP
);
1936 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_widget
*widget
,
1937 struct snd_kcontrol
*kcontrol
, int connect
)
1939 struct snd_soc_card
*card
= widget
->dapm
->card
;
1942 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
1943 ret
= soc_dapm_mixer_update_power(widget
, kcontrol
, connect
);
1944 mutex_unlock(&card
->dapm_mutex
);
1946 soc_dpcm_runtime_update(widget
);
1949 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power
);
1951 /* show dapm widget status in sys fs */
1952 static ssize_t
dapm_widget_show(struct device
*dev
,
1953 struct device_attribute
*attr
, char *buf
)
1955 struct snd_soc_pcm_runtime
*rtd
= dev_get_drvdata(dev
);
1956 struct snd_soc_codec
*codec
=rtd
->codec
;
1957 struct snd_soc_dapm_widget
*w
;
1959 char *state
= "not set";
1961 list_for_each_entry(w
, &codec
->card
->widgets
, list
) {
1962 if (w
->dapm
!= &codec
->dapm
)
1965 /* only display widgets that burnm power */
1967 case snd_soc_dapm_hp
:
1968 case snd_soc_dapm_mic
:
1969 case snd_soc_dapm_spk
:
1970 case snd_soc_dapm_line
:
1971 case snd_soc_dapm_micbias
:
1972 case snd_soc_dapm_dac
:
1973 case snd_soc_dapm_adc
:
1974 case snd_soc_dapm_pga
:
1975 case snd_soc_dapm_out_drv
:
1976 case snd_soc_dapm_mixer
:
1977 case snd_soc_dapm_mixer_named_ctl
:
1978 case snd_soc_dapm_supply
:
1979 case snd_soc_dapm_regulator_supply
:
1980 case snd_soc_dapm_clock_supply
:
1982 count
+= sprintf(buf
+ count
, "%s: %s\n",
1983 w
->name
, w
->power
? "On":"Off");
1990 switch (codec
->dapm
.bias_level
) {
1991 case SND_SOC_BIAS_ON
:
1994 case SND_SOC_BIAS_PREPARE
:
1997 case SND_SOC_BIAS_STANDBY
:
2000 case SND_SOC_BIAS_OFF
:
2004 count
+= sprintf(buf
+ count
, "PM State: %s\n", state
);
2009 static DEVICE_ATTR(dapm_widget
, 0444, dapm_widget_show
, NULL
);
2011 int snd_soc_dapm_sys_add(struct device
*dev
)
2013 return device_create_file(dev
, &dev_attr_dapm_widget
);
2016 static void snd_soc_dapm_sys_remove(struct device
*dev
)
2018 device_remove_file(dev
, &dev_attr_dapm_widget
);
2021 /* free all dapm widgets and resources */
2022 static void dapm_free_widgets(struct snd_soc_dapm_context
*dapm
)
2024 struct snd_soc_dapm_widget
*w
, *next_w
;
2025 struct snd_soc_dapm_path
*p
, *next_p
;
2027 list_for_each_entry_safe(w
, next_w
, &dapm
->card
->widgets
, list
) {
2028 if (w
->dapm
!= dapm
)
2032 * remove source and sink paths associated to this widget.
2033 * While removing the path, remove reference to it from both
2034 * source and sink widgets so that path is removed only once.
2036 list_for_each_entry_safe(p
, next_p
, &w
->sources
, list_sink
) {
2037 list_del(&p
->list_sink
);
2038 list_del(&p
->list_source
);
2040 kfree(p
->long_name
);
2043 list_for_each_entry_safe(p
, next_p
, &w
->sinks
, list_source
) {
2044 list_del(&p
->list_sink
);
2045 list_del(&p
->list_source
);
2047 kfree(p
->long_name
);
2050 kfree(w
->kcontrols
);
2056 static struct snd_soc_dapm_widget
*dapm_find_widget(
2057 struct snd_soc_dapm_context
*dapm
, const char *pin
,
2058 bool search_other_contexts
)
2060 struct snd_soc_dapm_widget
*w
;
2061 struct snd_soc_dapm_widget
*fallback
= NULL
;
2063 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
2064 if (!strcmp(w
->name
, pin
)) {
2065 if (w
->dapm
== dapm
)
2072 if (search_other_contexts
)
2078 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context
*dapm
,
2079 const char *pin
, int status
)
2081 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
2084 dev_err(dapm
->dev
, "dapm: unknown pin %s\n", pin
);
2088 if (w
->connected
!= status
)
2089 dapm_mark_dirty(w
, "pin configuration");
2091 w
->connected
= status
;
2099 * snd_soc_dapm_sync - scan and power dapm paths
2100 * @dapm: DAPM context
2102 * Walks all dapm audio paths and powers widgets according to their
2103 * stream or path usage.
2105 * Returns 0 for success.
2107 int snd_soc_dapm_sync(struct snd_soc_dapm_context
*dapm
)
2112 * Suppress early reports (eg, jacks syncing their state) to avoid
2113 * silly DAPM runs during card startup.
2115 if (!dapm
->card
|| !dapm
->card
->instantiated
)
2118 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2119 ret
= dapm_power_widgets(dapm
, SND_SOC_DAPM_STREAM_NOP
);
2120 mutex_unlock(&dapm
->card
->dapm_mutex
);
2123 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync
);
2125 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context
*dapm
,
2126 const struct snd_soc_dapm_route
*route
)
2128 struct snd_soc_dapm_path
*path
;
2129 struct snd_soc_dapm_widget
*wsource
= NULL
, *wsink
= NULL
, *w
;
2130 struct snd_soc_dapm_widget
*wtsource
= NULL
, *wtsink
= NULL
;
2132 const char *control
= route
->control
;
2134 char prefixed_sink
[80];
2135 char prefixed_source
[80];
2138 if (dapm
->codec
&& dapm
->codec
->name_prefix
) {
2139 snprintf(prefixed_sink
, sizeof(prefixed_sink
), "%s %s",
2140 dapm
->codec
->name_prefix
, route
->sink
);
2141 sink
= prefixed_sink
;
2142 snprintf(prefixed_source
, sizeof(prefixed_source
), "%s %s",
2143 dapm
->codec
->name_prefix
, route
->source
);
2144 source
= prefixed_source
;
2147 source
= route
->source
;
2151 * find src and dest widgets over all widgets but favor a widget from
2152 * current DAPM context
2154 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
2155 if (!wsink
&& !(strcmp(w
->name
, sink
))) {
2157 if (w
->dapm
== dapm
)
2161 if (!wsource
&& !(strcmp(w
->name
, source
))) {
2163 if (w
->dapm
== dapm
)
2167 /* use widget from another DAPM context if not found from this */
2173 if (wsource
== NULL
|| wsink
== NULL
)
2176 path
= kzalloc(sizeof(struct snd_soc_dapm_path
), GFP_KERNEL
);
2180 path
->source
= wsource
;
2182 path
->connected
= route
->connected
;
2183 INIT_LIST_HEAD(&path
->list
);
2184 INIT_LIST_HEAD(&path
->list_source
);
2185 INIT_LIST_HEAD(&path
->list_sink
);
2187 /* check for external widgets */
2188 if (wsink
->id
== snd_soc_dapm_input
) {
2189 if (wsource
->id
== snd_soc_dapm_micbias
||
2190 wsource
->id
== snd_soc_dapm_mic
||
2191 wsource
->id
== snd_soc_dapm_line
||
2192 wsource
->id
== snd_soc_dapm_output
)
2195 if (wsource
->id
== snd_soc_dapm_output
) {
2196 if (wsink
->id
== snd_soc_dapm_spk
||
2197 wsink
->id
== snd_soc_dapm_hp
||
2198 wsink
->id
== snd_soc_dapm_line
||
2199 wsink
->id
== snd_soc_dapm_input
)
2203 /* connect static paths */
2204 if (control
== NULL
) {
2205 list_add(&path
->list
, &dapm
->card
->paths
);
2206 list_add(&path
->list_sink
, &wsink
->sources
);
2207 list_add(&path
->list_source
, &wsource
->sinks
);
2212 /* connect dynamic paths */
2213 switch (wsink
->id
) {
2214 case snd_soc_dapm_adc
:
2215 case snd_soc_dapm_dac
:
2216 case snd_soc_dapm_pga
:
2217 case snd_soc_dapm_out_drv
:
2218 case snd_soc_dapm_input
:
2219 case snd_soc_dapm_output
:
2220 case snd_soc_dapm_siggen
:
2221 case snd_soc_dapm_micbias
:
2222 case snd_soc_dapm_vmid
:
2223 case snd_soc_dapm_pre
:
2224 case snd_soc_dapm_post
:
2225 case snd_soc_dapm_supply
:
2226 case snd_soc_dapm_regulator_supply
:
2227 case snd_soc_dapm_clock_supply
:
2228 case snd_soc_dapm_aif_in
:
2229 case snd_soc_dapm_aif_out
:
2230 case snd_soc_dapm_dai
:
2231 case snd_soc_dapm_dai_link
:
2232 list_add(&path
->list
, &dapm
->card
->paths
);
2233 list_add(&path
->list_sink
, &wsink
->sources
);
2234 list_add(&path
->list_source
, &wsource
->sinks
);
2237 case snd_soc_dapm_mux
:
2238 case snd_soc_dapm_virt_mux
:
2239 case snd_soc_dapm_value_mux
:
2240 ret
= dapm_connect_mux(dapm
, wsource
, wsink
, path
, control
,
2241 &wsink
->kcontrol_news
[0]);
2245 case snd_soc_dapm_switch
:
2246 case snd_soc_dapm_mixer
:
2247 case snd_soc_dapm_mixer_named_ctl
:
2248 ret
= dapm_connect_mixer(dapm
, wsource
, wsink
, path
, control
);
2252 case snd_soc_dapm_hp
:
2253 case snd_soc_dapm_mic
:
2254 case snd_soc_dapm_line
:
2255 case snd_soc_dapm_spk
:
2256 list_add(&path
->list
, &dapm
->card
->paths
);
2257 list_add(&path
->list_sink
, &wsink
->sources
);
2258 list_add(&path
->list_source
, &wsource
->sinks
);
2263 dapm_mark_dirty(wsource
, "Route added");
2264 dapm_mark_dirty(wsink
, "Route added");
2269 dev_warn(dapm
->dev
, "asoc: no dapm match for %s --> %s --> %s\n",
2270 source
, control
, sink
);
2275 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context
*dapm
,
2276 const struct snd_soc_dapm_route
*route
)
2278 struct snd_soc_dapm_path
*path
, *p
;
2281 char prefixed_sink
[80];
2282 char prefixed_source
[80];
2284 if (route
->control
) {
2286 "Removal of routes with controls not supported\n");
2290 if (dapm
->codec
&& dapm
->codec
->name_prefix
) {
2291 snprintf(prefixed_sink
, sizeof(prefixed_sink
), "%s %s",
2292 dapm
->codec
->name_prefix
, route
->sink
);
2293 sink
= prefixed_sink
;
2294 snprintf(prefixed_source
, sizeof(prefixed_source
), "%s %s",
2295 dapm
->codec
->name_prefix
, route
->source
);
2296 source
= prefixed_source
;
2299 source
= route
->source
;
2303 list_for_each_entry(p
, &dapm
->card
->paths
, list
) {
2304 if (strcmp(p
->source
->name
, source
) != 0)
2306 if (strcmp(p
->sink
->name
, sink
) != 0)
2313 dapm_mark_dirty(path
->source
, "Route removed");
2314 dapm_mark_dirty(path
->sink
, "Route removed");
2316 list_del(&path
->list
);
2317 list_del(&path
->list_sink
);
2318 list_del(&path
->list_source
);
2321 dev_warn(dapm
->dev
, "Route %s->%s does not exist\n",
2329 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
2330 * @dapm: DAPM context
2331 * @route: audio routes
2332 * @num: number of routes
2334 * Connects 2 dapm widgets together via a named audio path. The sink is
2335 * the widget receiving the audio signal, whilst the source is the sender
2336 * of the audio signal.
2338 * Returns 0 for success else error. On error all resources can be freed
2339 * with a call to snd_soc_card_free().
2341 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context
*dapm
,
2342 const struct snd_soc_dapm_route
*route
, int num
)
2346 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2347 for (i
= 0; i
< num
; i
++) {
2348 r
= snd_soc_dapm_add_route(dapm
, route
);
2350 dev_err(dapm
->dev
, "Failed to add route %s->%s\n",
2351 route
->source
, route
->sink
);
2356 mutex_unlock(&dapm
->card
->dapm_mutex
);
2360 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes
);
2363 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
2364 * @dapm: DAPM context
2365 * @route: audio routes
2366 * @num: number of routes
2368 * Removes routes from the DAPM context.
2370 int snd_soc_dapm_del_routes(struct snd_soc_dapm_context
*dapm
,
2371 const struct snd_soc_dapm_route
*route
, int num
)
2375 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2376 for (i
= 0; i
< num
; i
++) {
2377 snd_soc_dapm_del_route(dapm
, route
);
2380 mutex_unlock(&dapm
->card
->dapm_mutex
);
2384 EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes
);
2386 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context
*dapm
,
2387 const struct snd_soc_dapm_route
*route
)
2389 struct snd_soc_dapm_widget
*source
= dapm_find_widget(dapm
,
2392 struct snd_soc_dapm_widget
*sink
= dapm_find_widget(dapm
,
2395 struct snd_soc_dapm_path
*path
;
2399 dev_err(dapm
->dev
, "Unable to find source %s for weak route\n",
2405 dev_err(dapm
->dev
, "Unable to find sink %s for weak route\n",
2410 if (route
->control
|| route
->connected
)
2411 dev_warn(dapm
->dev
, "Ignoring control for weak route %s->%s\n",
2412 route
->source
, route
->sink
);
2414 list_for_each_entry(path
, &source
->sinks
, list_source
) {
2415 if (path
->sink
== sink
) {
2422 dev_err(dapm
->dev
, "No path found for weak route %s->%s\n",
2423 route
->source
, route
->sink
);
2425 dev_warn(dapm
->dev
, "%d paths found for weak route %s->%s\n",
2426 count
, route
->source
, route
->sink
);
2432 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2433 * @dapm: DAPM context
2434 * @route: audio routes
2435 * @num: number of routes
2437 * Mark existing routes matching those specified in the passed array
2438 * as being weak, meaning that they are ignored for the purpose of
2439 * power decisions. The main intended use case is for sidetone paths
2440 * which couple audio between other independent paths if they are both
2441 * active in order to make the combination work better at the user
2442 * level but which aren't intended to be "used".
2444 * Note that CODEC drivers should not use this as sidetone type paths
2445 * can frequently also be used as bypass paths.
2447 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context
*dapm
,
2448 const struct snd_soc_dapm_route
*route
, int num
)
2453 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2454 for (i
= 0; i
< num
; i
++) {
2455 err
= snd_soc_dapm_weak_route(dapm
, route
);
2460 mutex_unlock(&dapm
->card
->dapm_mutex
);
2464 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes
);
2467 * snd_soc_dapm_new_widgets - add new dapm widgets
2468 * @dapm: DAPM context
2470 * Checks the codec for any new dapm widgets and creates them if found.
2472 * Returns 0 for success.
2474 int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context
*dapm
)
2476 struct snd_soc_dapm_widget
*w
;
2479 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
2481 list_for_each_entry(w
, &dapm
->card
->widgets
, list
)
2486 if (w
->num_kcontrols
) {
2487 w
->kcontrols
= kzalloc(w
->num_kcontrols
*
2488 sizeof(struct snd_kcontrol
*),
2490 if (!w
->kcontrols
) {
2491 mutex_unlock(&dapm
->card
->dapm_mutex
);
2497 case snd_soc_dapm_switch
:
2498 case snd_soc_dapm_mixer
:
2499 case snd_soc_dapm_mixer_named_ctl
:
2502 case snd_soc_dapm_mux
:
2503 case snd_soc_dapm_virt_mux
:
2504 case snd_soc_dapm_value_mux
:
2507 case snd_soc_dapm_pga
:
2508 case snd_soc_dapm_out_drv
:
2515 /* Read the initial power state from the device */
2517 val
= soc_widget_read(w
, w
->reg
);
2518 val
&= 1 << w
->shift
;
2528 dapm_mark_dirty(w
, "new widget");
2529 dapm_debugfs_add_widget(w
);
2532 dapm_power_widgets(dapm
, SND_SOC_DAPM_STREAM_NOP
);
2533 mutex_unlock(&dapm
->card
->dapm_mutex
);
2536 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets
);
2539 * snd_soc_dapm_get_volsw - dapm mixer get callback
2540 * @kcontrol: mixer control
2541 * @ucontrol: control element information
2543 * Callback to get the value of a dapm mixer control.
2545 * Returns 0 for success.
2547 int snd_soc_dapm_get_volsw(struct snd_kcontrol
*kcontrol
,
2548 struct snd_ctl_elem_value
*ucontrol
)
2550 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2551 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2552 struct soc_mixer_control
*mc
=
2553 (struct soc_mixer_control
*)kcontrol
->private_value
;
2554 unsigned int reg
= mc
->reg
;
2555 unsigned int shift
= mc
->shift
;
2557 unsigned int mask
= (1 << fls(max
)) - 1;
2558 unsigned int invert
= mc
->invert
;
2560 if (snd_soc_volsw_is_stereo(mc
))
2561 dev_warn(widget
->dapm
->dev
,
2562 "Control '%s' is stereo, which is not supported\n",
2565 ucontrol
->value
.integer
.value
[0] =
2566 (snd_soc_read(widget
->codec
, reg
) >> shift
) & mask
;
2568 ucontrol
->value
.integer
.value
[0] =
2569 max
- ucontrol
->value
.integer
.value
[0];
2573 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw
);
2576 * snd_soc_dapm_put_volsw - dapm mixer set callback
2577 * @kcontrol: mixer control
2578 * @ucontrol: control element information
2580 * Callback to set the value of a dapm mixer control.
2582 * Returns 0 for success.
2584 int snd_soc_dapm_put_volsw(struct snd_kcontrol
*kcontrol
,
2585 struct snd_ctl_elem_value
*ucontrol
)
2587 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2588 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2589 struct snd_soc_codec
*codec
= widget
->codec
;
2590 struct snd_soc_card
*card
= codec
->card
;
2591 struct soc_mixer_control
*mc
=
2592 (struct soc_mixer_control
*)kcontrol
->private_value
;
2593 unsigned int reg
= mc
->reg
;
2594 unsigned int shift
= mc
->shift
;
2596 unsigned int mask
= (1 << fls(max
)) - 1;
2597 unsigned int invert
= mc
->invert
;
2599 int connect
, change
;
2600 struct snd_soc_dapm_update update
;
2603 if (snd_soc_volsw_is_stereo(mc
))
2604 dev_warn(widget
->dapm
->dev
,
2605 "Control '%s' is stereo, which is not supported\n",
2608 val
= (ucontrol
->value
.integer
.value
[0] & mask
);
2613 mask
= mask
<< shift
;
2616 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2618 change
= snd_soc_test_bits(widget
->codec
, reg
, mask
, val
);
2620 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2621 widget
= wlist
->widgets
[wi
];
2623 widget
->value
= val
;
2625 update
.kcontrol
= kcontrol
;
2626 update
.widget
= widget
;
2630 widget
->dapm
->update
= &update
;
2632 soc_dapm_mixer_update_power(widget
, kcontrol
, connect
);
2634 widget
->dapm
->update
= NULL
;
2638 mutex_unlock(&card
->dapm_mutex
);
2641 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw
);
2644 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
2645 * @kcontrol: mixer control
2646 * @ucontrol: control element information
2648 * Callback to get the value of a dapm enumerated double mixer control.
2650 * Returns 0 for success.
2652 int snd_soc_dapm_get_enum_double(struct snd_kcontrol
*kcontrol
,
2653 struct snd_ctl_elem_value
*ucontrol
)
2655 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2656 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2657 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2658 unsigned int val
, bitmask
;
2660 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2662 val
= snd_soc_read(widget
->codec
, e
->reg
);
2663 ucontrol
->value
.enumerated
.item
[0] = (val
>> e
->shift_l
) & (bitmask
- 1);
2664 if (e
->shift_l
!= e
->shift_r
)
2665 ucontrol
->value
.enumerated
.item
[1] =
2666 (val
>> e
->shift_r
) & (bitmask
- 1);
2670 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double
);
2673 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
2674 * @kcontrol: mixer control
2675 * @ucontrol: control element information
2677 * Callback to set the value of a dapm enumerated double mixer control.
2679 * Returns 0 for success.
2681 int snd_soc_dapm_put_enum_double(struct snd_kcontrol
*kcontrol
,
2682 struct snd_ctl_elem_value
*ucontrol
)
2684 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2685 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2686 struct snd_soc_codec
*codec
= widget
->codec
;
2687 struct snd_soc_card
*card
= codec
->card
;
2688 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2689 unsigned int val
, mux
, change
;
2690 unsigned int mask
, bitmask
;
2691 struct snd_soc_dapm_update update
;
2694 for (bitmask
= 1; bitmask
< e
->max
; bitmask
<<= 1)
2696 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2698 mux
= ucontrol
->value
.enumerated
.item
[0];
2699 val
= mux
<< e
->shift_l
;
2700 mask
= (bitmask
- 1) << e
->shift_l
;
2701 if (e
->shift_l
!= e
->shift_r
) {
2702 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2704 val
|= ucontrol
->value
.enumerated
.item
[1] << e
->shift_r
;
2705 mask
|= (bitmask
- 1) << e
->shift_r
;
2708 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2710 change
= snd_soc_test_bits(widget
->codec
, e
->reg
, mask
, val
);
2712 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2713 widget
= wlist
->widgets
[wi
];
2715 widget
->value
= val
;
2717 update
.kcontrol
= kcontrol
;
2718 update
.widget
= widget
;
2719 update
.reg
= e
->reg
;
2722 widget
->dapm
->update
= &update
;
2724 soc_dapm_mux_update_power(widget
, kcontrol
, mux
, e
);
2726 widget
->dapm
->update
= NULL
;
2730 mutex_unlock(&card
->dapm_mutex
);
2733 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double
);
2736 * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux
2737 * @kcontrol: mixer control
2738 * @ucontrol: control element information
2740 * Returns 0 for success.
2742 int snd_soc_dapm_get_enum_virt(struct snd_kcontrol
*kcontrol
,
2743 struct snd_ctl_elem_value
*ucontrol
)
2745 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2746 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2748 ucontrol
->value
.enumerated
.item
[0] = widget
->value
;
2752 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt
);
2755 * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux
2756 * @kcontrol: mixer control
2757 * @ucontrol: control element information
2759 * Returns 0 for success.
2761 int snd_soc_dapm_put_enum_virt(struct snd_kcontrol
*kcontrol
,
2762 struct snd_ctl_elem_value
*ucontrol
)
2764 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2765 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2766 struct snd_soc_codec
*codec
= widget
->codec
;
2767 struct snd_soc_card
*card
= codec
->card
;
2768 struct soc_enum
*e
=
2769 (struct soc_enum
*)kcontrol
->private_value
;
2774 if (ucontrol
->value
.enumerated
.item
[0] >= e
->max
)
2777 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2779 change
= widget
->value
!= ucontrol
->value
.enumerated
.item
[0];
2781 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2782 widget
= wlist
->widgets
[wi
];
2784 widget
->value
= ucontrol
->value
.enumerated
.item
[0];
2786 soc_dapm_mux_update_power(widget
, kcontrol
, widget
->value
, e
);
2790 mutex_unlock(&card
->dapm_mutex
);
2793 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt
);
2796 * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get
2798 * @kcontrol: mixer control
2799 * @ucontrol: control element information
2801 * Callback to get the value of a dapm semi enumerated double mixer control.
2803 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2804 * used for handling bitfield coded enumeration for example.
2806 * Returns 0 for success.
2808 int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol
*kcontrol
,
2809 struct snd_ctl_elem_value
*ucontrol
)
2811 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2812 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2813 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2814 unsigned int reg_val
, val
, mux
;
2816 reg_val
= snd_soc_read(widget
->codec
, e
->reg
);
2817 val
= (reg_val
>> e
->shift_l
) & e
->mask
;
2818 for (mux
= 0; mux
< e
->max
; mux
++) {
2819 if (val
== e
->values
[mux
])
2822 ucontrol
->value
.enumerated
.item
[0] = mux
;
2823 if (e
->shift_l
!= e
->shift_r
) {
2824 val
= (reg_val
>> e
->shift_r
) & e
->mask
;
2825 for (mux
= 0; mux
< e
->max
; mux
++) {
2826 if (val
== e
->values
[mux
])
2829 ucontrol
->value
.enumerated
.item
[1] = mux
;
2834 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double
);
2837 * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set
2839 * @kcontrol: mixer control
2840 * @ucontrol: control element information
2842 * Callback to set the value of a dapm semi enumerated double mixer control.
2844 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2845 * used for handling bitfield coded enumeration for example.
2847 * Returns 0 for success.
2849 int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol
*kcontrol
,
2850 struct snd_ctl_elem_value
*ucontrol
)
2852 struct snd_soc_dapm_widget_list
*wlist
= snd_kcontrol_chip(kcontrol
);
2853 struct snd_soc_dapm_widget
*widget
= wlist
->widgets
[0];
2854 struct snd_soc_codec
*codec
= widget
->codec
;
2855 struct snd_soc_card
*card
= codec
->card
;
2856 struct soc_enum
*e
= (struct soc_enum
*)kcontrol
->private_value
;
2857 unsigned int val
, mux
, change
;
2859 struct snd_soc_dapm_update update
;
2862 if (ucontrol
->value
.enumerated
.item
[0] > e
->max
- 1)
2864 mux
= ucontrol
->value
.enumerated
.item
[0];
2865 val
= e
->values
[ucontrol
->value
.enumerated
.item
[0]] << e
->shift_l
;
2866 mask
= e
->mask
<< e
->shift_l
;
2867 if (e
->shift_l
!= e
->shift_r
) {
2868 if (ucontrol
->value
.enumerated
.item
[1] > e
->max
- 1)
2870 val
|= e
->values
[ucontrol
->value
.enumerated
.item
[1]] << e
->shift_r
;
2871 mask
|= e
->mask
<< e
->shift_r
;
2874 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2876 change
= snd_soc_test_bits(widget
->codec
, e
->reg
, mask
, val
);
2878 for (wi
= 0; wi
< wlist
->num_widgets
; wi
++) {
2879 widget
= wlist
->widgets
[wi
];
2881 widget
->value
= val
;
2883 update
.kcontrol
= kcontrol
;
2884 update
.widget
= widget
;
2885 update
.reg
= e
->reg
;
2888 widget
->dapm
->update
= &update
;
2890 soc_dapm_mux_update_power(widget
, kcontrol
, mux
, e
);
2892 widget
->dapm
->update
= NULL
;
2896 mutex_unlock(&card
->dapm_mutex
);
2899 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double
);
2902 * snd_soc_dapm_info_pin_switch - Info for a pin switch
2904 * @kcontrol: mixer control
2905 * @uinfo: control element information
2907 * Callback to provide information about a pin switch control.
2909 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol
*kcontrol
,
2910 struct snd_ctl_elem_info
*uinfo
)
2912 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_BOOLEAN
;
2914 uinfo
->value
.integer
.min
= 0;
2915 uinfo
->value
.integer
.max
= 1;
2919 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch
);
2922 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
2924 * @kcontrol: mixer control
2927 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol
*kcontrol
,
2928 struct snd_ctl_elem_value
*ucontrol
)
2930 struct snd_soc_card
*card
= snd_kcontrol_chip(kcontrol
);
2931 const char *pin
= (const char *)kcontrol
->private_value
;
2933 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2935 ucontrol
->value
.integer
.value
[0] =
2936 snd_soc_dapm_get_pin_status(&card
->dapm
, pin
);
2938 mutex_unlock(&card
->dapm_mutex
);
2942 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch
);
2945 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
2947 * @kcontrol: mixer control
2950 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol
*kcontrol
,
2951 struct snd_ctl_elem_value
*ucontrol
)
2953 struct snd_soc_card
*card
= snd_kcontrol_chip(kcontrol
);
2954 const char *pin
= (const char *)kcontrol
->private_value
;
2956 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
2958 if (ucontrol
->value
.integer
.value
[0])
2959 snd_soc_dapm_enable_pin(&card
->dapm
, pin
);
2961 snd_soc_dapm_disable_pin(&card
->dapm
, pin
);
2963 mutex_unlock(&card
->dapm_mutex
);
2965 snd_soc_dapm_sync(&card
->dapm
);
2968 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch
);
2970 static struct snd_soc_dapm_widget
*
2971 snd_soc_dapm_new_control(struct snd_soc_dapm_context
*dapm
,
2972 const struct snd_soc_dapm_widget
*widget
)
2974 struct snd_soc_dapm_widget
*w
;
2978 if ((w
= dapm_cnew_widget(widget
)) == NULL
)
2982 case snd_soc_dapm_regulator_supply
:
2983 w
->regulator
= devm_regulator_get(dapm
->dev
, w
->name
);
2984 if (IS_ERR(w
->regulator
)) {
2985 ret
= PTR_ERR(w
->regulator
);
2986 dev_err(dapm
->dev
, "Failed to request %s: %d\n",
2991 case snd_soc_dapm_clock_supply
:
2992 #ifdef CONFIG_CLKDEV_LOOKUP
2993 w
->clk
= devm_clk_get(dapm
->dev
, w
->name
);
2994 if (IS_ERR(w
->clk
)) {
2995 ret
= PTR_ERR(w
->clk
);
2996 dev_err(dapm
->dev
, "Failed to request %s: %d\n",
3008 name_len
= strlen(widget
->name
) + 1;
3009 if (dapm
->codec
&& dapm
->codec
->name_prefix
)
3010 name_len
+= 1 + strlen(dapm
->codec
->name_prefix
);
3011 w
->name
= kmalloc(name_len
, GFP_KERNEL
);
3012 if (w
->name
== NULL
) {
3016 if (dapm
->codec
&& dapm
->codec
->name_prefix
)
3017 snprintf((char *)w
->name
, name_len
, "%s %s",
3018 dapm
->codec
->name_prefix
, widget
->name
);
3020 snprintf((char *)w
->name
, name_len
, "%s", widget
->name
);
3023 case snd_soc_dapm_switch
:
3024 case snd_soc_dapm_mixer
:
3025 case snd_soc_dapm_mixer_named_ctl
:
3026 w
->power_check
= dapm_generic_check_power
;
3028 case snd_soc_dapm_mux
:
3029 case snd_soc_dapm_virt_mux
:
3030 case snd_soc_dapm_value_mux
:
3031 w
->power_check
= dapm_generic_check_power
;
3033 case snd_soc_dapm_adc
:
3034 case snd_soc_dapm_aif_out
:
3035 w
->power_check
= dapm_adc_check_power
;
3037 case snd_soc_dapm_dac
:
3038 case snd_soc_dapm_aif_in
:
3039 w
->power_check
= dapm_dac_check_power
;
3041 case snd_soc_dapm_pga
:
3042 case snd_soc_dapm_out_drv
:
3043 case snd_soc_dapm_input
:
3044 case snd_soc_dapm_output
:
3045 case snd_soc_dapm_micbias
:
3046 case snd_soc_dapm_spk
:
3047 case snd_soc_dapm_hp
:
3048 case snd_soc_dapm_mic
:
3049 case snd_soc_dapm_line
:
3050 case snd_soc_dapm_dai_link
:
3051 w
->power_check
= dapm_generic_check_power
;
3053 case snd_soc_dapm_supply
:
3054 case snd_soc_dapm_regulator_supply
:
3055 case snd_soc_dapm_clock_supply
:
3056 w
->power_check
= dapm_supply_check_power
;
3058 case snd_soc_dapm_dai
:
3059 w
->power_check
= dapm_dai_check_power
;
3062 w
->power_check
= dapm_always_on_check_power
;
3068 w
->codec
= dapm
->codec
;
3069 w
->platform
= dapm
->platform
;
3070 INIT_LIST_HEAD(&w
->sources
);
3071 INIT_LIST_HEAD(&w
->sinks
);
3072 INIT_LIST_HEAD(&w
->list
);
3073 INIT_LIST_HEAD(&w
->dirty
);
3074 list_add(&w
->list
, &dapm
->card
->widgets
);
3076 /* machine layer set ups unconnected pins and insertions */
3082 * snd_soc_dapm_new_controls - create new dapm controls
3083 * @dapm: DAPM context
3084 * @widget: widget array
3085 * @num: number of widgets
3087 * Creates new DAPM controls based upon the templates.
3089 * Returns 0 for success else error.
3091 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context
*dapm
,
3092 const struct snd_soc_dapm_widget
*widget
,
3095 struct snd_soc_dapm_widget
*w
;
3099 mutex_lock_nested(&dapm
->card
->dapm_mutex
, SND_SOC_DAPM_CLASS_INIT
);
3100 for (i
= 0; i
< num
; i
++) {
3101 w
= snd_soc_dapm_new_control(dapm
, widget
);
3104 "ASoC: Failed to create DAPM control %s\n",
3111 mutex_unlock(&dapm
->card
->dapm_mutex
);
3114 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls
);
3116 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget
*w
,
3117 struct snd_kcontrol
*kcontrol
, int event
)
3119 struct snd_soc_dapm_path
*source_p
, *sink_p
;
3120 struct snd_soc_dai
*source
, *sink
;
3121 const struct snd_soc_pcm_stream
*config
= w
->params
;
3122 struct snd_pcm_substream substream
;
3123 struct snd_pcm_hw_params
*params
= NULL
;
3128 BUG_ON(list_empty(&w
->sources
) || list_empty(&w
->sinks
));
3130 /* We only support a single source and sink, pick the first */
3131 source_p
= list_first_entry(&w
->sources
, struct snd_soc_dapm_path
,
3133 sink_p
= list_first_entry(&w
->sinks
, struct snd_soc_dapm_path
,
3136 BUG_ON(!source_p
|| !sink_p
);
3137 BUG_ON(!sink_p
->source
|| !source_p
->sink
);
3138 BUG_ON(!source_p
->source
|| !sink_p
->sink
);
3140 source
= source_p
->source
->priv
;
3141 sink
= sink_p
->sink
->priv
;
3143 /* Be a little careful as we don't want to overflow the mask array */
3144 if (config
->formats
) {
3145 fmt
= ffs(config
->formats
) - 1;
3147 dev_warn(w
->dapm
->dev
, "Invalid format %llx specified\n",
3152 /* Currently very limited parameter selection */
3153 params
= kzalloc(sizeof(*params
), GFP_KERNEL
);
3158 snd_mask_set(hw_param_mask(params
, SNDRV_PCM_HW_PARAM_FORMAT
), fmt
);
3160 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
)->min
=
3162 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_RATE
)->max
=
3165 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
)->min
3166 = config
->channels_min
;
3167 hw_param_interval(params
, SNDRV_PCM_HW_PARAM_CHANNELS
)->max
3168 = config
->channels_max
;
3170 memset(&substream
, 0, sizeof(substream
));
3173 case SND_SOC_DAPM_PRE_PMU
:
3174 if (source
->driver
->ops
&& source
->driver
->ops
->hw_params
) {
3175 substream
.stream
= SNDRV_PCM_STREAM_CAPTURE
;
3176 ret
= source
->driver
->ops
->hw_params(&substream
,
3179 dev_err(source
->dev
,
3180 "hw_params() failed: %d\n", ret
);
3185 if (sink
->driver
->ops
&& sink
->driver
->ops
->hw_params
) {
3186 substream
.stream
= SNDRV_PCM_STREAM_PLAYBACK
;
3187 ret
= sink
->driver
->ops
->hw_params(&substream
, params
,
3191 "hw_params() failed: %d\n", ret
);
3197 case SND_SOC_DAPM_POST_PMU
:
3198 ret
= snd_soc_dai_digital_mute(sink
, 0);
3199 if (ret
!= 0 && ret
!= -ENOTSUPP
)
3200 dev_warn(sink
->dev
, "Failed to unmute: %d\n", ret
);
3204 case SND_SOC_DAPM_PRE_PMD
:
3205 ret
= snd_soc_dai_digital_mute(sink
, 1);
3206 if (ret
!= 0 && ret
!= -ENOTSUPP
)
3207 dev_warn(sink
->dev
, "Failed to mute: %d\n", ret
);
3221 int snd_soc_dapm_new_pcm(struct snd_soc_card
*card
,
3222 const struct snd_soc_pcm_stream
*params
,
3223 struct snd_soc_dapm_widget
*source
,
3224 struct snd_soc_dapm_widget
*sink
)
3226 struct snd_soc_dapm_route routes
[2];
3227 struct snd_soc_dapm_widget
template;
3228 struct snd_soc_dapm_widget
*w
;
3232 len
= strlen(source
->name
) + strlen(sink
->name
) + 2;
3233 link_name
= devm_kzalloc(card
->dev
, len
, GFP_KERNEL
);
3236 snprintf(link_name
, len
, "%s-%s", source
->name
, sink
->name
);
3238 memset(&template, 0, sizeof(template));
3239 template.reg
= SND_SOC_NOPM
;
3240 template.id
= snd_soc_dapm_dai_link
;
3241 template.name
= link_name
;
3242 template.event
= snd_soc_dai_link_event
;
3243 template.event_flags
= SND_SOC_DAPM_PRE_PMU
| SND_SOC_DAPM_POST_PMU
|
3244 SND_SOC_DAPM_PRE_PMD
;
3246 dev_dbg(card
->dev
, "adding %s widget\n", link_name
);
3248 w
= snd_soc_dapm_new_control(&card
->dapm
, &template);
3250 dev_err(card
->dev
, "Failed to create %s widget\n",
3257 memset(&routes
, 0, sizeof(routes
));
3259 routes
[0].source
= source
->name
;
3260 routes
[0].sink
= link_name
;
3261 routes
[1].source
= link_name
;
3262 routes
[1].sink
= sink
->name
;
3264 return snd_soc_dapm_add_routes(&card
->dapm
, routes
,
3265 ARRAY_SIZE(routes
));
3268 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context
*dapm
,
3269 struct snd_soc_dai
*dai
)
3271 struct snd_soc_dapm_widget
template;
3272 struct snd_soc_dapm_widget
*w
;
3274 WARN_ON(dapm
->dev
!= dai
->dev
);
3276 memset(&template, 0, sizeof(template));
3277 template.reg
= SND_SOC_NOPM
;
3279 if (dai
->driver
->playback
.stream_name
) {
3280 template.id
= snd_soc_dapm_dai
;
3281 template.name
= dai
->driver
->playback
.stream_name
;
3282 template.sname
= dai
->driver
->playback
.stream_name
;
3284 dev_dbg(dai
->dev
, "adding %s widget\n",
3287 w
= snd_soc_dapm_new_control(dapm
, &template);
3289 dev_err(dapm
->dev
, "Failed to create %s widget\n",
3290 dai
->driver
->playback
.stream_name
);
3294 dai
->playback_widget
= w
;
3297 if (dai
->driver
->capture
.stream_name
) {
3298 template.id
= snd_soc_dapm_dai
;
3299 template.name
= dai
->driver
->capture
.stream_name
;
3300 template.sname
= dai
->driver
->capture
.stream_name
;
3302 dev_dbg(dai
->dev
, "adding %s widget\n",
3305 w
= snd_soc_dapm_new_control(dapm
, &template);
3307 dev_err(dapm
->dev
, "Failed to create %s widget\n",
3308 dai
->driver
->capture
.stream_name
);
3312 dai
->capture_widget
= w
;
3318 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card
*card
)
3320 struct snd_soc_dapm_widget
*dai_w
, *w
;
3321 struct snd_soc_dai
*dai
;
3322 struct snd_soc_dapm_route r
;
3324 memset(&r
, 0, sizeof(r
));
3326 /* For each DAI widget... */
3327 list_for_each_entry(dai_w
, &card
->widgets
, list
) {
3328 if (dai_w
->id
!= snd_soc_dapm_dai
)
3333 /* ...find all widgets with the same stream and link them */
3334 list_for_each_entry(w
, &card
->widgets
, list
) {
3335 if (w
->dapm
!= dai_w
->dapm
)
3338 if (w
->id
== snd_soc_dapm_dai
)
3344 if (dai
->driver
->playback
.stream_name
&&
3346 dai
->driver
->playback
.stream_name
)) {
3347 r
.source
= dai
->playback_widget
->name
;
3349 dev_dbg(dai
->dev
, "%s -> %s\n",
3352 snd_soc_dapm_add_route(w
->dapm
, &r
);
3355 if (dai
->driver
->capture
.stream_name
&&
3357 dai
->driver
->capture
.stream_name
)) {
3359 r
.sink
= dai
->capture_widget
->name
;
3360 dev_dbg(dai
->dev
, "%s -> %s\n",
3363 snd_soc_dapm_add_route(w
->dapm
, &r
);
3371 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime
*rtd
, int stream
,
3375 struct snd_soc_dapm_widget
*w_cpu
, *w_codec
;
3376 struct snd_soc_dai
*cpu_dai
= rtd
->cpu_dai
;
3377 struct snd_soc_dai
*codec_dai
= rtd
->codec_dai
;
3379 if (stream
== SNDRV_PCM_STREAM_PLAYBACK
) {
3380 w_cpu
= cpu_dai
->playback_widget
;
3381 w_codec
= codec_dai
->playback_widget
;
3383 w_cpu
= cpu_dai
->capture_widget
;
3384 w_codec
= codec_dai
->capture_widget
;
3389 dapm_mark_dirty(w_cpu
, "stream event");
3392 case SND_SOC_DAPM_STREAM_START
:
3395 case SND_SOC_DAPM_STREAM_STOP
:
3398 case SND_SOC_DAPM_STREAM_SUSPEND
:
3399 case SND_SOC_DAPM_STREAM_RESUME
:
3400 case SND_SOC_DAPM_STREAM_PAUSE_PUSH
:
3401 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE
:
3408 dapm_mark_dirty(w_codec
, "stream event");
3411 case SND_SOC_DAPM_STREAM_START
:
3412 w_codec
->active
= 1;
3414 case SND_SOC_DAPM_STREAM_STOP
:
3415 w_codec
->active
= 0;
3417 case SND_SOC_DAPM_STREAM_SUSPEND
:
3418 case SND_SOC_DAPM_STREAM_RESUME
:
3419 case SND_SOC_DAPM_STREAM_PAUSE_PUSH
:
3420 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE
:
3425 dapm_power_widgets(&rtd
->card
->dapm
, event
);
3429 * snd_soc_dapm_stream_event - send a stream event to the dapm core
3430 * @rtd: PCM runtime data
3431 * @stream: stream name
3432 * @event: stream event
3434 * Sends a stream event to the dapm core. The core then makes any
3435 * necessary widget power changes.
3437 * Returns 0 for success else error.
3439 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime
*rtd
, int stream
,
3442 struct snd_soc_card
*card
= rtd
->card
;
3444 mutex_lock_nested(&card
->dapm_mutex
, SND_SOC_DAPM_CLASS_RUNTIME
);
3445 soc_dapm_stream_event(rtd
, stream
, event
);
3446 mutex_unlock(&card
->dapm_mutex
);
3450 * snd_soc_dapm_enable_pin - enable pin.
3451 * @dapm: DAPM context
3454 * Enables input/output pin and its parents or children widgets iff there is
3455 * a valid audio route and active audio stream.
3456 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3457 * do any widget power switching.
3459 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
3461 return snd_soc_dapm_set_pin(dapm
, pin
, 1);
3463 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin
);
3466 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
3467 * @dapm: DAPM context
3470 * Enables input/output pin regardless of any other state. This is
3471 * intended for use with microphone bias supplies used in microphone
3474 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3475 * do any widget power switching.
3477 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context
*dapm
,
3480 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
3483 dev_err(dapm
->dev
, "dapm: unknown pin %s\n", pin
);
3487 dev_dbg(w
->dapm
->dev
, "dapm: force enable pin %s\n", pin
);
3490 dapm_mark_dirty(w
, "force enable");
3494 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin
);
3497 * snd_soc_dapm_disable_pin - disable pin.
3498 * @dapm: DAPM context
3501 * Disables input/output pin and its parents or children widgets.
3502 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3503 * do any widget power switching.
3505 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context
*dapm
,
3508 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
3510 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin
);
3513 * snd_soc_dapm_nc_pin - permanently disable pin.
3514 * @dapm: DAPM context
3517 * Marks the specified pin as being not connected, disabling it along
3518 * any parent or child widgets. At present this is identical to
3519 * snd_soc_dapm_disable_pin() but in future it will be extended to do
3520 * additional things such as disabling controls which only affect
3521 * paths through the pin.
3523 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3524 * do any widget power switching.
3526 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context
*dapm
, const char *pin
)
3528 return snd_soc_dapm_set_pin(dapm
, pin
, 0);
3530 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin
);
3533 * snd_soc_dapm_get_pin_status - get audio pin status
3534 * @dapm: DAPM context
3535 * @pin: audio signal pin endpoint (or start point)
3537 * Get audio pin status - connected or disconnected.
3539 * Returns 1 for connected otherwise 0.
3541 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context
*dapm
,
3544 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, true);
3547 return w
->connected
;
3551 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status
);
3554 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
3555 * @dapm: DAPM context
3556 * @pin: audio signal pin endpoint (or start point)
3558 * Mark the given endpoint or pin as ignoring suspend. When the
3559 * system is disabled a path between two endpoints flagged as ignoring
3560 * suspend will not be disabled. The path must already be enabled via
3561 * normal means at suspend time, it will not be turned on if it was not
3564 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context
*dapm
,
3567 struct snd_soc_dapm_widget
*w
= dapm_find_widget(dapm
, pin
, false);
3570 dev_err(dapm
->dev
, "dapm: unknown pin %s\n", pin
);
3574 w
->ignore_suspend
= 1;
3578 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend
);
3580 static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card
*card
,
3581 struct snd_soc_dapm_widget
*w
)
3583 struct snd_soc_dapm_path
*p
;
3585 list_for_each_entry(p
, &card
->paths
, list
) {
3586 if ((p
->source
== w
) || (p
->sink
== w
)) {
3588 "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n",
3589 p
->source
->name
, p
->source
->id
, p
->source
->dapm
,
3590 p
->sink
->name
, p
->sink
->id
, p
->sink
->dapm
);
3592 /* Connected to something other than the codec */
3593 if (p
->source
->dapm
!= p
->sink
->dapm
)
3596 * Loopback connection from codec external pin to
3597 * codec external pin
3599 if (p
->sink
->id
== snd_soc_dapm_input
) {
3600 switch (p
->source
->id
) {
3601 case snd_soc_dapm_output
:
3602 case snd_soc_dapm_micbias
:
3615 * snd_soc_dapm_auto_nc_codec_pins - call snd_soc_dapm_nc_pin for unused pins
3616 * @codec: The codec whose pins should be processed
3618 * Automatically call snd_soc_dapm_nc_pin() for any external pins in the codec
3619 * which are unused. Pins are used if they are connected externally to the
3620 * codec, whether that be to some other device, or a loop-back connection to
3623 void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec
*codec
)
3625 struct snd_soc_card
*card
= codec
->card
;
3626 struct snd_soc_dapm_context
*dapm
= &codec
->dapm
;
3627 struct snd_soc_dapm_widget
*w
;
3629 dev_dbg(codec
->dev
, "Auto NC: DAPMs: card:%p codec:%p\n",
3630 &card
->dapm
, &codec
->dapm
);
3632 list_for_each_entry(w
, &card
->widgets
, list
) {
3633 if (w
->dapm
!= dapm
)
3636 case snd_soc_dapm_input
:
3637 case snd_soc_dapm_output
:
3638 case snd_soc_dapm_micbias
:
3639 dev_dbg(codec
->dev
, "Auto NC: Checking widget %s\n",
3641 if (!snd_soc_dapm_widget_in_card_paths(card
, w
)) {
3643 "... Not in map; disabling\n");
3644 snd_soc_dapm_nc_pin(dapm
, w
->name
);
3654 * snd_soc_dapm_free - free dapm resources
3655 * @dapm: DAPM context
3657 * Free all dapm widgets and resources.
3659 void snd_soc_dapm_free(struct snd_soc_dapm_context
*dapm
)
3661 snd_soc_dapm_sys_remove(dapm
->dev
);
3662 dapm_debugfs_cleanup(dapm
);
3663 dapm_free_widgets(dapm
);
3664 list_del(&dapm
->list
);
3666 EXPORT_SYMBOL_GPL(snd_soc_dapm_free
);
3668 static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context
*dapm
)
3670 struct snd_soc_card
*card
= dapm
->card
;
3671 struct snd_soc_dapm_widget
*w
;
3672 LIST_HEAD(down_list
);
3675 mutex_lock(&card
->dapm_mutex
);
3677 list_for_each_entry(w
, &dapm
->card
->widgets
, list
) {
3678 if (w
->dapm
!= dapm
)
3681 dapm_seq_insert(w
, &down_list
, false);
3687 /* If there were no widgets to power down we're already in
3691 if (dapm
->bias_level
== SND_SOC_BIAS_ON
)
3692 snd_soc_dapm_set_bias_level(dapm
,
3693 SND_SOC_BIAS_PREPARE
);
3694 dapm_seq_run(dapm
, &down_list
, 0, false);
3695 if (dapm
->bias_level
== SND_SOC_BIAS_PREPARE
)
3696 snd_soc_dapm_set_bias_level(dapm
,
3697 SND_SOC_BIAS_STANDBY
);
3700 mutex_unlock(&card
->dapm_mutex
);
3704 * snd_soc_dapm_shutdown - callback for system shutdown
3706 void snd_soc_dapm_shutdown(struct snd_soc_card
*card
)
3708 struct snd_soc_codec
*codec
;
3710 list_for_each_entry(codec
, &card
->codec_dev_list
, list
) {
3711 soc_dapm_shutdown_codec(&codec
->dapm
);
3712 if (codec
->dapm
.bias_level
== SND_SOC_BIAS_STANDBY
)
3713 snd_soc_dapm_set_bias_level(&codec
->dapm
,
3718 /* Module information */
3719 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3720 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
3721 MODULE_LICENSE("GPL");